Question

7. How does sex determination happen in human? (ASI)



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Answer 1

Answer:

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Answer 2

Answer:

the sex of the child depends upon the kind of sperm that fertilizes the egg.

the sex cell of female contains only XX chromosome while sex cell of male contains XY chromosome

Explanation:

the egg contains only one 'X' chromosome, but the half of the sperms released into the genital tract of a female during coitus are X bearing and remaining half are Y bearing.

it is simply a matter of chance as to which type of sperm fuses with egg

if the egg is fused with X bearing sperm, the resulting combination will be XX that is of a female and child will be female

X + X = XX (girl)

while

if the egg fuses with Y bearing sperm the resulting combination is XY that is of a male

and the child will be male

X + Y = XY (boy)