Science, asked by Abhitggeuvs, 1 year ago

How sex determined is an unborn in child?

Answers

Answered by seman01

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.

Abhitggeuvs: Why sex determined is an unborn in child

Answered by krishchawla310

Answer:

Explanation:

Human body cells have 23 pairs of chromosomes in the nucleus. Twenty two pairs control most of the characteristics. Pair 23 are the sex chromosomes. They carry genes that determine an embryo's sex - whether offspring are male or female:

males have two different sex chromosomes, XY

females have two X chromosomes, XX

These photographs show all the chromosomes aligned in pairs.

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