Question

3.23 Explain how here is determined in human
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Answer 1

Answer:

Human beings have XX_XY sex determination system. In this, the males have XY sex chromosomes. They produce two types of gametes having X and Y chromosome. The females have XX chromosome. They produce only one type of gamete having X chromosome. The sex of a child is determined by the type of chromosome he/she receiving from the father. If sperm is having X chromosome, then the child will be a girl. If sperm is having Y chromosome, then the chilld will be a boy. The Y chromosome carries factors responsible for triggering male development. The X chromosome carries factors responsible for triggering female development.

Answer 2

Answer:

i think this is right answer

Explanation:

Sex of child in humans is determined by the type of male haploid gamete that fuses with the female egg. The chromosome in the 23rd pair of a male gamete can be either X or Y. ... Similarly if the male gamete with the Y chromosome fuses with the female egg, the child will be male.