Biology, asked by saidev7429, 1 year ago

How is the sex of a child determined in human beings?

Answers

Answered by thenightowl

out of the 23 pairs of chromosomes present in human being 22 are homologous and 1 pair is referred to as the sex chromosome which determines the sex of the child. sex of the child is just a matter of chance. for understanding purposes let's consider the pair to be XY. now if the ovum fuses with the Y chromosome of the sperm the zygote will have XY combination which forms a male child. but if the ovum fuses with the X chromosome of the sperm the zygote will have XX chromosome which develops into a female child.

drdhayanitha: The sex of an unborn child is determined by a process called amniocentesis, where the amniotic fluid where the baby is present in the uterus is tested for the chromosome number and sex chromosomes. If there are two x chromosomes with the rest 44 autosomes, it is a girl child. However, if there is one x and one y sex chromosome, it is a boy child. Doctors also find out if there is any anomaly in the child due to genetic diseases through this process.

Answered by Anonymous

Answer:

Human beings exhibit male heterogamy. In humans, males (XY) produce two different types of gametes, X and Y. The human female (XX) produces only one type of gametes containing X chromosomes. The sex of the baby is determined by the type of male gamete that fuses with the female gamete. If the fertilizing sperm contains X chromosome, then the baby produced will be a girl and if the fertilizing sperm contains Y chromosome, then the baby produced will be a boy. Hence, it is a matter of chance that determines the sex of a baby. There is an equal probability of the fertilizing sperm being an X or Y chromosome. Thus, it is the genetic make up of the sperm that determines the sex of the baby.

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