In man the normal number of chromosomes is
In man the normal number of chromosomes is
- A
$42$
- B
$44$
- C
$46$
- D
$48$
Similar Questions
Sex determination in Drosophila melanogaster is based on
Sex determination in Drosophila melanogaster is based on
- [AIEEE 2004]
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]
Bird females have chromosome arrangement as
Bird females have chromosome arrangement as
- [AIIMS 2009]
What is heterogametic ? Explain by giving proper examples ?
What is heterogametic ? Explain by giving proper examples ?
Assertion : In humans, the gamete contributed by the male determines whether the child produced will be male or female.
Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.
Assertion : In humans, the gamete contributed by the male determines whether the child produced will be male or female.
Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.
- [AIIMS 2005]