Question

22. How is the sex of the child determined in human being?​

Answer 1

Answer:

Explanation:

Chromosomal sex is determined at the time of fertilization; a chromosome from the sperm cell, either X or Y, fuses with the X chromosome in the egg cell. Gonadal sex refers to the gonads, that is the testis or ovaries, depending on which genes are expressed.

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Answer 2

Answer:

Explanation:

*Sex determination is a process by which sex of a new born

individual can be determined.

*Human beings have one pair of sex chromosomes and 22

pairs of autosomes.

*Sex chromosomes of male is XY .

Sex chromosomes of female is XX

*Females are homogametic (XX) and males are heterogametic

(XY).

*Sex of the child depends on what happens during

fertilization.

*If a sperm carrying X chromosome fertilizes with the egg(X),

the child born will be female.

*If a sperm carrying Y chromosome fertilizes with the egg(X),

the child born will be male.

*Thus, the sperm (male gamete) determines the sex of the

child.