Question

When a sperm having X-chromosome fuses with the ovum, the child born will be. 

A) Male

B) Female

C) Male as well as female twin

D) It depends on the chance of fusion

​

Answer 1

Answer:

While females have XX chromosomes, so all ovum will carry X chromosome. So when a sperm containing X chromosome fertilises an ovum, a zygote with XX chromosomes is formed. Thus a female child is born.

Explanation:

But answer is B)female

please mera answer ko brainliest kar do PLEASE...

Answer 2

A female child is born when a sperm having an X chromosome fuses with an ovum.

• The sperm or the male karyotype contains X and Y chromosomes, and the female ovum consists of two X chromosomes.

• Hence a sperm containing an X chromosome fuses with a female ovum to produce a female child.

• If a sperm containing the Y chromosome fuses with the ovum, then the result will be a male child.

• The male karyotype is 22 + XY and the female karyotype is 22 + XX.