explain how to the sex of the child is determinded of human being
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Answered by
6
It is determined by thread like structures called chromosomes.A human being have 23 pairs of chromosomes in the nuclei of their cells. There are two types of sex chromosomes.
a- X chromosome
b- Y chromosome
females have XX chromosome while males have XY chromosome
If the pair forms XX one from mother and one from father then the foetus will be a girl .
If the pair forms XY X from mother and Y from father then the foetus will be a boy.
a- X chromosome
b- Y chromosome
females have XX chromosome while males have XY chromosome
If the pair forms XX one from mother and one from father then the foetus will be a girl .
If the pair forms XY X from mother and Y from father then the foetus will be a boy.
Answered by
10
Justification of statement is as follows
- Sex determination depends upon the presence of sex chromosomes. There exists two types of sex chromosomes namely X and Y chromosome.
- Females carry XX sex chromosomes while males carry XY chromosome. X chromosome from father results in girl child while Y chromosome from father results in boy child.
- Hence, their exists 50% chance of fertilization of X carrying ovum(from mother), by sperm carrying X or Y chromosome(from father). Thus, the given statement is justified.
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