How is sex determined in human beings?
How is sex determined in human beings?
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 $\mathrm{X}$ 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 $\mathrm{X}$ 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 $\mathrm{X}$ or $\mathrm{Y}$ chromosome. Thus, it is the genetic makeup of the sperm that determines the sex of the baby. (figure)
Similar Questions
What type of sex determination is observed in grass hopper ?
What type of sex determination is observed in grass hopper ?
Which one of the following conditions correctly describes the manner of determining the sex?
Which one of the following conditions correctly describes the manner of determining the sex?
- [AIPMT 2011]
Two different types of gametes in terms of the sex chromosomes, are produced by
Two different types of gametes in terms of the sex chromosomes, are produced by
Match the items of column $I$ with column $II$
Column $I$
Column $II$
$(a)\; XX-XO$ method of sex determination
$(i)$ Turner's syndrome
$(b)\; XX-XY$ method of sex determination
$(ii)$ Female heterogametic
$(c)$ Karyotype$-45 $
$(iii)$ Grasshopper
$(d)\; ZW-ZZ$ method of sex determination
$(iv)$ Female homogametic
Select the correct option from the following
Match the items of column $I$ with column $II$
| Column $I$ | Column $II$ |
| $(a)\; XX-XO$ method of sex determination | $(i)$ Turner's syndrome |
| $(b)\; XX-XY$ method of sex determination | $(ii)$ Female heterogametic |
| $(c)$ Karyotype$-45 $ | $(iii)$ Grasshopper |
| $(d)\; ZW-ZZ$ method of sex determination | $(iv)$ Female homogametic |
Select the correct option from the following
- [NEET 2019]
Which one of the following conditions correctly describes the manner of determining the sex?
Which one of the following conditions correctly describes the manner of determining the sex?
- [AIIMS 2018]