write note on sex determination in unborn baby
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if one x chromosome and Y chromosome combine it forms a baby boy.
if one X chromosome and X chromosome combine it forms a baby girl
sex determination depends on male
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Sex determination in an unbom baby:
The sex of a baby is determined by the type of male gamete that fuses with the female gamete.
All human beings have 23 pairs of chromosomes in their nuclei. Out of these 23 pairs, the last pair is known as the sex chromosome.
The human males have 23 pairs of chromosomes including XY sex chromosomes, Therefore, the male gamete has 22 chromosomes and either an X or Y sex chromosome.
Male gametes can be of two types: 22+X or 22+YFemales have 23 pairs of chromosomes including XX sex chromosomes. Therefore, their gametes can only have 22 chromosomes and one X sex chromosome,
Thus, as the mother provides only X chromosome, the sex of the baby is determined by the type of male gamete (X or Y) that fuses with the X chromosome of the female.
The sex of a baby is determined by the type of male gamete that fuses with the female gamete.
All human beings have 23 pairs of chromosomes in their nuclei. Out of these 23 pairs, the last pair is known as the sex chromosome.
The human males have 23 pairs of chromosomes including XY sex chromosomes, Therefore, the male gamete has 22 chromosomes and either an X or Y sex chromosome.
Male gametes can be of two types: 22+X or 22+YFemales have 23 pairs of chromosomes including XX sex chromosomes. Therefore, their gametes can only have 22 chromosomes and one X sex chromosome,
Thus, as the mother provides only X chromosome, the sex of the baby is determined by the type of male gamete (X or Y) that fuses with the X chromosome of the female.
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