Question

Please answer 7th question..... ​

Answer 1

The females carry two X-chromosomes. Females produce one type of gametes (eggs) with same type of chromosomes (22 + X). ... Among the male gametes, half of the sperms carry X-chromosome (22 + X) and half carry Y-chromosome (22 + Y). Thus female is homogametic and male is heterogametic.

Answer 2

Answer:

$\huge\mathbb\purple{Heya\ ☺}$

》The sex of the child depends upon the kind of sperm that fertilises the egg.

》The egg contains only one X chromosome, but half of the sperm released into the genital tract of female during copulation are X-bearing and the half remaining are Y-bearing.

》It is simply a matter of chance as to which type of sperm fuses with ovum.

• If the X-bearing sperm fuses with the egg the result will be a daughter.

• If the Y-bearing sperm fuses with the egg the result will be a son.