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Sex organ

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behind the protuberance. If the fetus has testes and the testes produce testosterone, and if the cells of the genitals respond to the testosterone, the outer urogenital folds swell and fuse in the midline to produce the scrotum; the protuberance grows larger and straighter to form the penis; the
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are flat worms widely used in biological research. There are sexual and asexual planaria. Sexual planaria are hermaphrodites, possessing both testicles and ovaries. Each planarian transports its excretion to the other planarian, giving and receiving sperm.
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can take place. Within each pollen grain is a male gametophyte, which consists of only three cells. In most flowering plants, the female gametophyte within the ovule consists of only seven cells. Thus there are no sex organs as such.
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The development of the internal and external reproductive organs is determined by hormones produced by certain fetal gonads (ovaries or testicles) and the cells' response to them. The initial appearance of the
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affecting the structure and function of genitalia, they form an organ system that evolves rapidly. A great variety of genital form and function may therefore be found among animals.
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during sperm transfer"; female genitalia are defined as "those parts of the female reproductive tract that make direct contact with male genitalia or male products (sperm,
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Similar gametangia that are similar are known as isogametangia. While male and female gametangia are known as heterogametangia, which occurs in the majority of fungi.
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mating and the deposition of eggs are known collectively as the external genitalia, although they may be largely internal; their components are very diverse in form.
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of offspring. Sex organs are found in many species of animals and plants, with their features varying depending on the species.
1899: 725: 223: 989:, which in turn develop into gametophytes. Any sex organs that are produced by the plant will develop on the gametophyte. The 1909: 1882: 1855: 1816: 1789: 1714: 1649: 1615: 1588: 1561: 1534: 1392: 1365: 322:, male genitalia are more strictly defined as "all male structures that are inserted in the female or that hold her near her 1822: 771:, determines the direction of the differentiation. The absence of it allows the gonads to continue to develop into ovaries. 2379: 1715:
Nature's Nether Regions: What the Sex Lives of Bugs, Birds, and Beasts Tell Us About Evolution, Biodiversity, and Ourselves
1735:"Male reproductive behaviour of Naja oxiana (Eichwald, 1831) in captivity, with a case of unilateral hemipenile prolapse" 1086: 1940: 1872: 1189: 1141: 1151: 923: 909: 711: 256: 1382: 2326: 2141: 800: 339: 2372: 826:) serves as the only opening for the reproductive, digestive, and urinary tracts (if present) in both sexes. All 2249: 693: 1024:
involves the union of the male and female germ cells, sperm and egg cells respectively. Pollen is produced in
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switze, International Conference on Comparative Physiology 1992 Crans; Bassau, Short & (4 August 1994).
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likewise produce their sexually reproductive structures within the gametophytes contained within the
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The reproductive system of gastropods (slugs and snails) varies greatly from one group to another.
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Male and Female Circumcision: Medical, Legal, and Ethical Considerations in Pediatric Practice
1578: 1524: 2331: 1168: 958: 890: 184:, but the sex organs themselves are inside the gametophytes within the pollen and the ovule. 1551: 788:
inner urogenital swellings grow, wrap around the penis, and fuse in the midline to form the
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Fanaroff and Martin's Neonatal-Perinatal Medicine E-Book: Diseases of the Fetus and Infant
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Langerhans, R. Brian; Anderson, Christopher M.; Heinen-Kay, Justa L. (6 September 2016).
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Eberhard, W.G., 1985. Sexual Selection and Animal Genitalia. Harvard University Press
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Manoharachary, C.; Tilak, K. V. B. R.; Mallaiah, K. V.; Kunwar, I. K. (1 May 2016).
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Hodges, Frederick Mansfield S.; Denniston, George C.; Milos, Marilyn Fayre (2007).
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Purves, William K.; Sadava, David E.; Orians, Gordon H.; Heller, H. Craig (2001).
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Purves, William K.; Sadava, David E.; Orians, Gordon H.; Heller, H. Craig (2001).
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following female development. As primary sex organs, gonads generate reproductive
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represents a primary factor for genital evolution. Male genitalia show traits of
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In most plant species, an individual has both male and female sex organs (a
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Penile and clitoral structures are present in some birds and many reptiles.
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are the rest of the reproductive system, whether internal or external. The
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fish is determined by the shape of a fleshy tube behind the anus known as
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of an organism. Sex organs are responsible for producing and transporting
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Comparative evidence for the evolution of genitalia by sexual selection
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Daphne's Dance: True Tales in the Evolution of Woman's Sexual Awareness
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Heritage, J.; Evans, E. G. V.; Killington, R. A. (26 January 1996).
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and pollen. The cones and pollen are not themselves sexual organs.
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Martin, Richard J.; Fanaroff, Avory A.; Walsh, Michele C. (2014).
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The process of sexual differentiation includes the development of
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In animals (including humans), the male sex organs include the
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Mycology and Microbiology (A Textbook for UG and PG Courses)
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The Evolution of Primary Sexual Characters in Animals
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Trends in Ecology & Evolution 19.2 (2004): 87-93.
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Anatomy and Physiology: Understanding the Human Body
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List of homologues of the human reproductive system
195:Together, the sex organs constitute an organism's 1929:Leonard, Janet L.; Córdoba-Aguilar, Alex (2010). 783:with a small protuberance in the middle, and the 2816: 1519: 1170:ANATOMY PHYSIOLOGY OF FEMALE REPRODUCTIVE SYSTEM 140:In plants, male reproductive structures include 1271:. Emc.maricopa.edu. 18 May 2010. Archived from 439:ones, exposure of the genitals is considered a 168:for reproductive organs, which are part of the 55:, is a part of an organism that is involved in 16:Biological part involved in sexual reproduction 1549: 1424:"Causes and Consequences of Genital Evolution" 1353: 2380: 1965: 1146:. Jones & Bartlett Learning. p. 25. 78:Sex organs are typically differentiated into 1583:. Oxford University Press, US. p. 219. 1529:. University of Chicago Press. p. 583. 1380: 121:. All other sex-related organs are known as 1576: 1407:: CS1 maint: numeric names: authors list ( 330:) during or immediately after copulation". 2394: 2387: 2373: 1972: 1958: 1877:. Cambridge University Press. p. 19. 1644:. Elsevier Health Sciences. p. 1522. 1387:. Cambridge University Press. p. 54. 1354:Schmidt-Rhaesa, Andreas (30 August 2007). 148:. Female reproductive structures, such as 137:, which in both sexes, are always hidden. 1488: 1439: 712:Learn how and when to remove this message 649:Human female external sex organs (shaved 446:In humans, sex organs/genitalia include: 427:, females have two genital orifices, the 257:Learn how and when to remove this message 1513: 1473:"Sexual selection and genital evolution" 1360:. Oxford University Press. p. 252. 1293: 1215: 1036:, which has the ovule at its base where 884: 792:. Each organ/body part in one sex has a 644: 535: 229:Relevant discussion may be found on the 20: 1470: 1287: 1135: 1133: 779:genitalia looks female-like: a pair of 540:Human male external sex organs (shaved 344:It is hard to find a common origin for 2817: 1904:. Scientific Publishers. p. 328. 1673:Sexual selection and genital evolution 1671:Hosken, David J., and Paula Stockley." 1526:Hyman's Comparative Vertebrate Anatomy 726:Development of the reproductive system 241:to additional sources at this section. 156:and receive pollen for fertilization. 2368: 1953: 1580:Unpopular Privacy: What Must We Hide? 1209: 1139: 740:, sex organs originate from a common 371:that are driven by sexual selection. 1166: 1130: 985:. The sporophyte produces spores by 694:adding citations to reliable sources 665: 206: 101:; the female sex organs include the 59:. Sex organs constitute the primary 2068:Heterogametic sex / Homogametic sex 1935:. Oxford: Oxford University Press. 1804: 1550:Brigitta Olsen (15 November 2009). 1428:Integrative and Comparative Biology 1173:. Blue Rose Publishers. p. 14. 1087:Genital modification and mutilation 903: 408:genitals for males consists of the 281:following male development or into 144:in flowering plants, which produce 125:. The outer parts are known as the 71:and supporting the development and 13: 1922: 1825:from the original on 10 April 2023 1759:from the original on 25 March 2023 1197:from the original on 19 March 2023 1190:American Museum of Natural History 822:, a single posterior orifice (the 416:; for females, it consists of the 222:relies largely or entirely upon a 14: 2836: 1384:The Differences Between the Sexes 924:Reproductive system of planarians 910:Reproductive system of gastropods 2349: 2348: 2142:Evolution of sexual reproduction 1805:Pal, Nishant (6 December 2021). 869: 834:, some fish, and a few mammals ( 813: 801:secondary sexual characteristics 670: 340:Evolution of sexual reproduction 211: 1891: 1864: 1837: 1798: 1771: 1741: 1727: 1707: 1686: 1665: 1631: 1597: 1570: 1543: 1464: 1415: 1374: 1347: 981:produces sperm or egg cells by 681:needs additional citations for 164:, and some similar plants have 2250:Sexual reproduction in animals 1357:The Evolution of Organ Systems 1338: 1313: 1269:"Flowering Plant Reproduction" 1261: 1235: 1177: 1160: 661: 379: 202: 1: 1577:Anita Allen (November 2011). 1556:. Brigitta Olsen. p. 9. 1123: 946:Plant reproductive morphology 393:Mammalian reproductive system 363:A consensus has emerged that 152:in flowering plants, produce 2122:Sex as a biological variable 2105:Simultaneous hermaphroditism 1847:Life: The Science of Biology 1781:Life: The Science of Biology 1704:Nature 393.6687 (1998): 784. 333: 7: 1811:. Independently Published. 1610:. Springer US. p. 10. 1300:"Reproductive System"  1069: 917: 10: 2841: 2260:Penile-vaginal intercourse 2100:Sequential hermaphroditism 1850:. Macmillan. p. 665. 1784:. Macmillan. p. 176. 1471:Simmons, Leigh W. (2014). 1107:Obstetrics and gynaecology 1048: 1008: 967:alternation of generations 942:Alternation of generations 939: 921: 907: 896:The organs concerned with 881:Insect reproductive system 878: 874: 729: 723: 390: 384: 374: 337: 307:, sometimes anglicized as 67:, as well as facilitating 2738: 2658: 2649: 2554: 2526: 2416: 2402: 2344: 2297: 2130: 2090:Testis-determining factor 1987: 1874:Introductory Microbiology 1167:Deol, Pooja Soni (2023). 1140:Clark, Robert K. (2005). 1013:In flowering plants, the 935: 769:testis determining factor 763:, usually located on the 397:Human reproductive system 2031:Sex-determination system 1044: 1017:contain the sex organs. 891:genitalia of Lepidoptera 1979: 1713:Schilthuizen, M. 2014. 1700:27 January 2012 at the 1679:12 October 2017 at the 1325:Encyclopædia Britannica 1306:Encyclopædia Britannica 1228:Encyclopædia Britannica 1020:Sexual reproduction in 401:The visible portion of 289:containing inheritable 2396:Human regional anatomy 2014:Sexual differentiation 1028:and is carried to the 893: 806:Because of the strong 654: 545: 44: 25:The sex organs of the 2056:Temperature-dependent 888: 648: 539: 391:Further information: 24: 1720:14 June 2023 at the 752:into male or female 738:prenatal development 690:improve this article 511:Bulbourethral glands 297:Secondary sex organs 235:improve this article 123:secondary sex organs 2272:Hormonal motivation 2245:Fungal reproduction 2164:Reproductive system 1222:"Pollination"  1185:"Parts of a Flower" 369:divergent evolution 197:reproductive system 180:produce pollen and 61:sex characteristics 57:sexual reproduction 2277:Human reproduction 2255:Sexual intercourse 2240:Plant reproduction 1692:Arnqvist, Göran. " 1477:Austral Entomology 1441:10.1093/icb/icw101 1243:"Mosses and Ferns" 1055:The sex organs in 894: 655: 635:Bartholin's glands 546: 271:primary sex organs 135:internal genitalia 131:external genitalia 119:primary sex organs 53:reproductive organ 51:, also known as a 45: 2812: 2811: 2808: 2807: 2362: 2361: 2282:Lordosis behavior 1997:Sexual dimorphism 1911:978-93-86102-13-3 1884:978-0-521-44977-9 1857:978-0-7167-3873-2 1818:979-8-7799-0473-5 1791:978-0-7167-3873-2 1753:en.wikisource.org 1651:978-0-32329-537-6 1617:978-0-58539-937-9 1590:978-0-19-514137-5 1563:978-0-9842117-0-8 1536:978-0-226-87013-7 1490:10.1111/aen.12053 1394:978-0-521-44878-9 1367:978-0-19-856668-7 1275:on 8 October 2012 977:gametophyte. The 767:and encoding the 722: 721: 714: 659: 658: 433:urethral openings 425:placental mammals 358:natural selection 267: 266: 259: 186:Coniferous plants 39:(red) and female 2832: 2656: 2655: 2587:Vertebral column 2389: 2382: 2375: 2366: 2365: 2352: 2351: 2312:Animal sexuality 2235:Sexual selection 1974: 1967: 1960: 1951: 1950: 1946: 1916: 1915: 1895: 1889: 1888: 1868: 1862: 1861: 1841: 1835: 1834: 1832: 1830: 1802: 1796: 1795: 1775: 1769: 1768: 1766: 1764: 1745: 1739: 1738: 1731: 1725: 1711: 1705: 1690: 1684: 1669: 1663: 1662: 1660: 1658: 1635: 1629: 1628: 1626: 1624: 1601: 1595: 1594: 1574: 1568: 1567: 1547: 1541: 1540: 1521:Marvalee H. Wake 1517: 1511: 1510: 1492: 1468: 1462: 1461: 1443: 1419: 1413: 1412: 1406: 1398: 1378: 1372: 1371: 1351: 1345: 1342: 1336: 1335: 1333: 1331: 1317: 1311: 1310: 1302: 1291: 1285: 1284: 1282: 1280: 1265: 1259: 1258: 1256: 1254: 1239: 1233: 1232: 1224: 1213: 1207: 1206: 1204: 1202: 1181: 1175: 1174: 1164: 1158: 1157: 1137: 1022:flowering plants 999:flowering plants 993:, which include 904:Slugs and snails 808:sexual selection 781:urogenital folds 717: 710: 706: 703: 697: 674: 666: 531:Seminal vesicles 449: 448: 441:public indecency 365:sexual selection 262: 255: 251: 248: 242: 215: 214: 207: 178:flowering plants 2840: 2839: 2835: 2834: 2833: 2831: 2830: 2829: 2815: 2814: 2813: 2804: 2734: 2645: 2550: 2522: 2412: 2398: 2393: 2363: 2358: 2340: 2327:Differentiation 2317:Human sexuality 2307:Plant sexuality 2293: 2189:Spermatogenesis 2133: 2126: 1989: 1983: 1978: 1943: 1925: 1923:Further reading 1920: 1919: 1912: 1896: 1892: 1885: 1869: 1865: 1858: 1842: 1838: 1828: 1826: 1819: 1803: 1799: 1792: 1776: 1772: 1762: 1760: 1747: 1746: 1742: 1733: 1732: 1728: 1722:Wayback Machine 1712: 1708: 1702:Wayback Machine 1691: 1687: 1681:Wayback Machine 1670: 1666: 1656: 1654: 1652: 1636: 1632: 1622: 1620: 1618: 1602: 1598: 1591: 1575: 1571: 1564: 1548: 1544: 1537: 1518: 1514: 1469: 1465: 1420: 1416: 1400: 1399: 1395: 1379: 1375: 1368: 1352: 1348: 1343: 1339: 1329: 1327: 1319: 1318: 1314: 1292: 1288: 1278: 1276: 1267: 1266: 1262: 1252: 1250: 1249:on 28 July 2012 1241: 1240: 1236: 1214: 1210: 1200: 1198: 1183: 1182: 1178: 1165: 1161: 1154: 1138: 1131: 1126: 1121: 1092:Human sexuality 1072: 1053: 1051:Mating in fungi 1047: 1011: 948: 940:Main articles: 938: 926: 920: 912: 906: 883: 877: 872: 864:genital papilla 848:marsupial moles 816: 734: 728: 718: 707: 701: 698: 687: 675: 664: 608:Fallopian tubes 521:Vasa deferentia 399: 387: 382: 377: 356:evolved due to 342: 336: 263: 252: 246: 243: 237:by introducing 228: 216: 212: 205: 17: 12: 11: 5: 2838: 2828: 2827: 2810: 2809: 2806: 2805: 2803: 2802: 2801: 2800: 2795: 2790: 2785: 2780: 2770: 2765: 2760: 2755: 2750: 2744: 2742: 2736: 2735: 2733: 2732: 2731: 2730: 2725: 2720: 2715: 2710: 2705: 2700: 2690: 2685: 2680: 2675: 2670: 2664: 2662: 2653: 2647: 2646: 2644: 2643: 2638: 2637: 2636: 2631: 2626: 2616: 2611: 2610: 2609: 2604: 2594: 2589: 2584: 2583: 2582: 2577: 2572: 2561: 2559: 2552: 2551: 2549: 2548: 2543: 2538: 2532: 2530: 2524: 2523: 2521: 2520: 2515: 2510: 2505: 2500: 2495: 2490: 2489: 2488: 2483: 2478: 2473: 2468: 2463: 2458: 2453: 2448: 2443: 2438: 2428: 2422: 2420: 2414: 2413: 2408: 2406: 2400: 2399: 2392: 2391: 2384: 2377: 2369: 2360: 2359: 2357: 2356: 2345: 2342: 2341: 2339: 2338: 2337: 2336: 2335: 2334: 2329: 2324: 2309: 2303: 2301: 2295: 2294: 2292: 2291: 2290: 2289: 2284: 2279: 2274: 2269: 2264: 2263: 2262: 2247: 2242: 2237: 2232: 2231: 2230: 2225: 2215: 2214: 2213: 2208: 2198: 2197: 2196: 2191: 2181: 2176: 2171: 2166: 2161: 2156: 2155: 2154: 2149: 2138: 2136: 2128: 2127: 2125: 2124: 2119: 2114: 2109: 2108: 2107: 2102: 2092: 2087: 2086: 2085: 2080: 2073:Sex chromosome 2070: 2065: 2064: 2063: 2058: 2053: 2048: 2043: 2038: 2028: 2027: 2026: 2021: 2011: 2010: 2009: 2004: 1993: 1991: 1985: 1984: 1977: 1976: 1969: 1962: 1954: 1948: 1947: 1942:978-0199717033 1941: 1924: 1921: 1918: 1917: 1910: 1890: 1883: 1863: 1856: 1836: 1817: 1797: 1790: 1770: 1740: 1726: 1706: 1685: 1664: 1650: 1630: 1616: 1596: 1589: 1569: 1562: 1542: 1535: 1512: 1463: 1434:(4): 741–751. 1414: 1393: 1373: 1366: 1346: 1337: 1312: 1297:, ed. (1911). 1295:Chisholm, Hugh 1286: 1260: 1234: 1219:, ed. (1911). 1217:Chisholm, Hugh 1208: 1176: 1159: 1152: 1128: 1127: 1125: 1122: 1120: 1119: 1114: 1109: 1104: 1099: 1094: 1089: 1084: 1079: 1073: 1071: 1068: 1049:Main article: 1046: 1043: 1010: 1007: 937: 934: 922:Main article: 919: 916: 908:Main article: 905: 902: 879:Main article: 876: 873: 871: 868: 818:In many other 815: 812: 724:Main article: 720: 719: 678: 676: 669: 663: 660: 657: 656: 643: 642: 640:Skene's glands 637: 632: 627: 626: 625: 615: 610: 599: 598: 597: 596: 591: 586: 581: 580: 579: 574: 569: 547: 534: 533: 528: 523: 518: 513: 508: 497: 496: 491: 490: 489: 484: 479: 461: 460: 455: 386: 383: 381: 378: 376: 373: 338:Main article: 335: 332: 328:spermatophores 265: 264: 233:. Please help 219: 217: 210: 204: 201: 15: 9: 6: 4: 3: 2: 2837: 2826: 2823: 2822: 2820: 2799: 2796: 2794: 2791: 2789: 2786: 2784: 2781: 2779: 2776: 2775: 2774: 2771: 2769: 2766: 2764: 2761: 2759: 2756: 2754: 2751: 2749: 2746: 2745: 2743: 2741: 2737: 2729: 2726: 2724: 2721: 2719: 2716: 2714: 2711: 2709: 2706: 2704: 2701: 2699: 2696: 2695: 2694: 2691: 2689: 2686: 2684: 2681: 2679: 2676: 2674: 2671: 2669: 2666: 2665: 2663: 2661: 2657: 2654: 2652: 2648: 2642: 2639: 2635: 2632: 2630: 2627: 2625: 2622: 2621: 2620: 2617: 2615: 2612: 2608: 2605: 2603: 2600: 2599: 2598: 2595: 2593: 2590: 2588: 2585: 2581: 2578: 2576: 2573: 2571: 2568: 2567: 2566: 2563: 2562: 2560: 2557: 2553: 2547: 2544: 2542: 2539: 2537: 2534: 2533: 2531: 2529: 2525: 2519: 2516: 2514: 2511: 2509: 2506: 2504: 2501: 2499: 2496: 2494: 2491: 2487: 2484: 2482: 2479: 2477: 2474: 2472: 2469: 2467: 2464: 2462: 2459: 2457: 2454: 2452: 2449: 2447: 2444: 2442: 2439: 2437: 2434: 2433: 2432: 2429: 2427: 2424: 2423: 2421: 2419: 2415: 2411: 2407: 2405: 2401: 2397: 2390: 2385: 2383: 2378: 2376: 2371: 2370: 2367: 2355: 2347: 2346: 2343: 2333: 2330: 2328: 2325: 2323: 2320: 2319: 2318: 2315: 2314: 2313: 2310: 2308: 2305: 2304: 2302: 2300: 2296: 2288: 2287:Pelvic thrust 2285: 2283: 2280: 2278: 2275: 2273: 2270: 2268: 2265: 2261: 2258: 2257: 2256: 2253: 2252: 2251: 2248: 2246: 2243: 2241: 2238: 2236: 2233: 2229: 2226: 2224: 2221: 2220: 2219: 2218:Fertilization 2216: 2212: 2209: 2207: 2204: 2203: 2202: 2199: 2195: 2192: 2190: 2187: 2186: 2185: 2184:Gametogenesis 2182: 2180: 2177: 2175: 2172: 2170: 2167: 2165: 2162: 2160: 2157: 2153: 2150: 2148: 2145: 2144: 2143: 2140: 2139: 2137: 2135: 2129: 2123: 2120: 2118: 2117:parasexuality 2115: 2113: 2110: 2106: 2103: 2101: 2098: 2097: 2096: 2095:Hermaphrodite 2093: 2091: 2088: 2084: 2081: 2079: 2076: 2075: 2074: 2071: 2069: 2066: 2062: 2061:Haplodiploidy 2059: 2057: 2054: 2052: 2049: 2047: 2044: 2042: 2039: 2037: 2034: 2033: 2032: 2029: 2025: 2022: 2020: 2017: 2016: 2015: 2012: 2008: 2005: 2003: 2000: 1999: 1998: 1995: 1994: 1992: 1986: 1982: 1975: 1970: 1968: 1963: 1961: 1956: 1955: 1952: 1944: 1938: 1934: 1933: 1927: 1926: 1913: 1907: 1903: 1902: 1894: 1886: 1880: 1876: 1875: 1867: 1859: 1853: 1849: 1848: 1840: 1824: 1820: 1814: 1810: 1809: 1808:Plant Biology 1801: 1793: 1787: 1783: 1782: 1774: 1758: 1754: 1750: 1744: 1736: 1730: 1724:. Penguin USA 1723: 1719: 1716: 1710: 1703: 1699: 1695: 1689: 1682: 1678: 1674: 1668: 1653: 1647: 1643: 1642: 1634: 1619: 1613: 1609: 1608: 1600: 1592: 1586: 1582: 1581: 1573: 1565: 1559: 1555: 1554: 1546: 1538: 1532: 1528: 1527: 1522: 1516: 1508: 1504: 1500: 1496: 1491: 1486: 1482: 1478: 1474: 1467: 1459: 1455: 1451: 1447: 1442: 1437: 1433: 1429: 1425: 1418: 1410: 1404: 1396: 1390: 1386: 1385: 1377: 1369: 1363: 1359: 1358: 1350: 1341: 1326: 1322: 1316: 1308: 1307: 1301: 1296: 1290: 1274: 1270: 1264: 1248: 1244: 1238: 1230: 1229: 1223: 1218: 1212: 1196: 1192: 1191: 1186: 1180: 1172: 1171: 1163: 1155: 1153:9780763748166 1149: 1145: 1144: 1136: 1134: 1129: 1118: 1115: 1113: 1110: 1108: 1105: 1103: 1102:Intimate part 1100: 1098: 1095: 1093: 1090: 1088: 1085: 1083: 1080: 1078: 1075: 1074: 1067: 1064: 1062: 1059:are known as 1058: 1052: 1042: 1039: 1038:fertilization 1035: 1031: 1027: 1023: 1018: 1016: 1006: 1004: 1000: 996: 992: 988: 984: 980: 976: 972: 968: 964: 960: 955: 953: 952:hermaphrodite 947: 943: 933: 930: 925: 915: 911: 901: 899: 892: 887: 882: 870:Invertebrates 867: 865: 861: 858: 854: 851: 849: 845: 841: 837: 833: 829: 825: 821: 814:Other animals 811: 809: 804: 802: 797: 796:counterpart. 795: 791: 786: 782: 778: 772: 770: 766: 762: 759: 755: 751: 750:differentiate 747: 744:during early 743: 739: 733: 727: 716: 713: 705: 695: 691: 685: 684: 679:This section 677: 673: 668: 667: 652: 647: 641: 638: 636: 633: 631: 628: 624: 621: 620: 619: 616: 614: 611: 609: 606: 605: 604: 603: 595: 592: 590: 587: 585: 582: 578: 575: 573: 570: 568: 565: 564: 563: 560: 559: 558: 555: 554: 553: 552: 548: 543: 538: 532: 529: 527: 524: 522: 519: 517: 514: 512: 509: 507: 504: 503: 502: 501: 495: 492: 488: 485: 483: 480: 478: 475: 474: 473: 470: 469: 468: 467: 463: 462: 459: 456: 454: 451: 450: 447: 444: 442: 438: 434: 430: 426: 421: 419: 415: 411: 407: 404: 398: 394: 389: 372: 370: 366: 361: 359: 355: 351: 347: 341: 331: 329: 325: 321: 317: 312: 310: 306: 302: 298: 294: 292: 288: 284: 280: 276: 272: 261: 258: 250: 240: 236: 232: 226: 225: 224:single source 220:This section 218: 209: 208: 200: 198: 193: 191: 187: 183: 179: 175: 171: 167: 163: 159: 155: 151: 147: 143: 138: 136: 132: 128: 124: 120: 116: 112: 108: 104: 100: 96: 92: 87: 85: 81: 76: 74: 70: 69:fertilization 66: 62: 58: 54: 50: 42: 38: 35:are the male 34: 33: 28: 23: 19: 2618: 2536:Adam's apple 2206:spermatozoon 2168: 2134:reproduction 2083:Y chromosome 2078:X chromosome 2024:Virilization 2019:Feminization 1931: 1900: 1893: 1873: 1866: 1846: 1839: 1827:. Retrieved 1807: 1800: 1780: 1773: 1761:. Retrieved 1752: 1743: 1729: 1709: 1688: 1667: 1655:. Retrieved 1640: 1633: 1621:. Retrieved 1606: 1599: 1579: 1572: 1552: 1545: 1525: 1515: 1480: 1476: 1466: 1431: 1427: 1417: 1383: 1376: 1356: 1349: 1340: 1328:. Retrieved 1324: 1315: 1304: 1289: 1277:. Retrieved 1273:the original 1263: 1251:. Retrieved 1247:the original 1237: 1226: 1211: 1199:. Retrieved 1188: 1179: 1169: 1162: 1142: 1112:Oophorectomy 1097:Hysterectomy 1082:Emasculation 1065: 1054: 1019: 1012: 956: 949: 927: 913: 895: 855: 852: 844:golden moles 817: 805: 798: 790:penile raphe 773: 765:Y chromosome 735: 708: 699: 688:Please help 683:verification 680: 601: 600: 589:Labia minora 584:Labia majora 550: 549: 516:Epididymides 499: 498: 465: 464: 445: 437:conservative 422: 400: 388: 362: 343: 313: 308: 304: 296: 295: 270: 268: 253: 244: 221: 194: 139: 134: 130: 126: 122: 118: 95:epididymides 88: 77: 52: 48: 46: 30: 18: 1657:24 November 1623:24 November 1483:(1): 1–17. 1117:Orchiectomy 991:seed plants 979:gametophyte 963:land plants 889:The female 820:vertebrates 736:In typical 702:August 2021 662:Development 380:Vertebrates 314:In general 247:August 2021 203:Terminology 170:gametophyte 27:green algae 2825:Sex organs 2703:Fingernail 2267:Copulation 1988:Biological 1124:References 1061:gametangia 1005:(female). 971:sporophyte 969:between a 959:life cycle 836:monotremes 828:amphibians 794:homologous 742:primordium 730:See also: 651:pubic hair 542:pubic hair 320:copulation 166:gametangia 41:archegonia 37:antheridia 2619:Genitalia 2322:Mechanics 2299:Sexuality 2194:Oogenesis 2169:Sex organ 2159:Germ cell 2147:Anisogamy 1499:2052-1758 1450:1540-7063 1403:cite book 1330:21 August 1077:Andrology 965:involves 830:, birds, 746:gestation 594:Vestibule 526:Testicles 406:mammalian 403:eutherian 334:Evolution 305:genitalia 279:testicles 239:citations 231:talk page 182:egg cells 91:testicles 49:sex organ 2819:Category 2748:Buttocks 2668:Shoulder 2503:Mandible 2436:Forehead 2354:Category 2332:Activity 2228:Internal 2223:External 2112:Intersex 1829:25 March 1823:Archived 1763:25 March 1757:Archived 1718:Archived 1698:Archived 1677:Archived 1523:(1992). 1507:53690631 1458:27600556 1279:1 August 1253:1 August 1201:19 March 1195:Archived 1070:See also 995:conifers 929:Planaria 918:Planaria 832:reptiles 602:Internal 562:Clitoris 551:External 506:Prostate 500:Internal 477:Foreskin 466:External 324:gonopore 309:genitals 273:are the 127:genitals 111:oviducts 103:clitoris 86:types. 2793:Toenail 2683:Forearm 2629:Scrotum 2575:Midriff 2565:Abdomen 2558:(Trunk) 2508:Occiput 2451:Eyebrow 2179:Meiosis 2152:Isogamy 1737:. 2018. 1321:"Gonad" 1026:stamens 1015:flowers 1009:Flowers 987:meiosis 983:mitosis 975:haploid 875:Insects 860:teleost 840:tenrecs 785:urethra 613:Ovaries 494:Scrotum 429:vaginal 414:scrotum 385:Mammals 375:Animals 354:ovaries 316:zoology 287:gametes 283:ovaries 174:flowers 150:pistils 142:stamens 107:ovaries 65:gametes 43:(brown) 2728:Little 2718:Middle 2698:Finger 2673:Axilla 2614:Pelvis 2607:Nipple 2602:Breast 2597:Thorax 2541:Throat 2518:Temple 2481:Tongue 2461:Eyelid 2201:Gamete 2174:Mating 2132:Sexual 2007:Female 1939:  1908:  1881:  1854:  1815:  1788:  1648:  1614:  1587:  1560:  1533:  1505:  1497:  1456:  1448:  1391:  1364:  1150:  1034:carpel 1030:pistil 973:and a 936:Plants 898:insect 857:Sexing 846:, and 824:cloaca 756:. The 630:Vagina 623:Cervix 618:Uterus 458:Female 350:testes 346:gonads 275:gonads 172:. The 158:Mosses 154:ovules 146:pollen 115:vagina 113:, and 97:, and 84:female 2778:Ankle 2758:Thigh 2713:Index 2708:Thumb 2688:Wrist 2678:Elbow 2651:Limbs 2634:Vulva 2624:Penis 2580:Navel 2570:Waist 2556:Torso 2513:Scalp 2486:Tooth 2471:Mouth 2441:Cheek 1990:terms 1503:S2CID 1057:fungi 1045:Fungi 1003:ovule 777:fetal 754:sexes 567:Glans 557:Vulva 487:Glans 482:Shaft 472:Penis 418:vulva 410:penis 303:term 301:Latin 190:cones 162:ferns 99:penis 73:birth 32:Chara 2798:Sole 2783:Heel 2773:Foot 2768:Calf 2763:Knee 2723:Ring 2693:Hand 2641:Anus 2592:Back 2546:Nape 2528:Neck 2466:Nose 2446:Chin 2431:Face 2426:Hair 2418:Head 2410:Skin 2404:Body 2211:ovum 2002:Male 1937:ISBN 1906:ISBN 1879:ISBN 1852:ISBN 1831:2023 1813:ISBN 1786:ISBN 1765:2023 1659:2023 1646:ISBN 1625:2023 1612:ISBN 1585:ISBN 1558:ISBN 1531:ISBN 1495:ISSN 1454:PMID 1446:ISSN 1409:link 1389:ISBN 1362:ISBN 1332:2024 1281:2012 1255:2012 1203:2023 1148:ISBN 997:and 957:The 944:and 761:gene 748:and 577:Hood 572:Body 453:Male 431:and 412:and 395:and 352:and 269:The 82:and 80:male 2788:Toe 2753:Hip 2740:Leg 2660:Arm 2498:Jaw 2493:Ear 2476:Lip 2456:Eye 1981:Sex 1696:." 1675:." 1485:doi 1436:doi 1032:or 961:of 954:). 758:SRY 692:by 423:In 291:DNA 176:of 129:or 105:, 2821:: 2051:ZO 2046:XO 2041:ZW 2036:XY 1821:. 1755:. 1751:. 1501:. 1493:. 1481:53 1479:. 1475:. 1452:. 1444:. 1432:56 1430:. 1426:. 1405:}} 1401:{{ 1323:. 1303:. 1225:. 1193:. 1187:. 1132:^ 866:. 842:, 838:, 443:. 420:. 360:. 199:. 160:, 109:, 93:, 47:A 29:; 2388:e 2381:t 2374:v 1973:e 1966:t 1959:v 1945:. 1914:. 1887:. 1860:. 1833:. 1794:. 1767:. 1661:. 1627:. 1593:. 1566:. 1539:. 1509:. 1487:: 1460:. 1438:: 1411:) 1397:. 1370:. 1334:. 1283:. 1257:. 1205:. 1156:. 715:) 709:( 704:) 700:( 686:. 653:) 544:) 260:) 254:( 249:) 245:( 227:.

Index


green algae
Chara
antheridia
archegonia
sexual reproduction
sex characteristics
gametes
fertilization
birth
male
female
testicles
epididymides
penis
clitoris
ovaries
oviducts
vagina
stamens
pollen
pistils
ovules
Mosses
ferns
gametangia
gametophyte
flowers
flowering plants
egg cells

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