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| 1. |
Explain the sex determination between mechanism in human being? |
| Answer» <html><body><p><strong>Answer:</strong></p><p>Human sex is determined by the presence or absence of a Y chromosome with a functional SRY gene. Once the SRY gene is activated, cells create testosterone and anti-müllerian hormone which typically ensures the development of a single, male reproductive system....................................,.,..................................................</p><p></p><p></p><p>sex determination in humans is of <a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a>-XY <a href="https://interviewquestions.tuteehub.com/tag/types-15918" style="font-weight:bold;" target="_blank" title="Click to know more about TYPES">TYPES</a>. Human has total 23 pairs of chromosomes; 22 pairs of autosomes and one pair of sex chromosomes. In humans, females are homomorphic (XX) and <a href="https://interviewquestions.tuteehub.com/tag/males-1085391" style="font-weight:bold;" target="_blank" title="Click to know more about MALES">MALES</a> have heteromorphic sex chromosomes (XY). During meiosis, all the gametes produced by females contain only the X chromosome (22 A + X), <a href="https://interviewquestions.tuteehub.com/tag/whereas-2326610" style="font-weight:bold;" target="_blank" title="Click to know more about WHEREAS">WHEREAS</a> males produce two kinds of gametes, 1/2 gametes with X - and 1/2 with Y-chromosome (22 A + X and 22 A + Y). Fertilization of egg (22 + X) with sperm carrying 22+X chromosomes results in female child (44A + XX). Fertilization of egg (22 + X) with a sperm carrying 22+Y chromosomes results in a male child (44A + XY).</p><p>solution</p></body></html> | |