In which of the following organisms is female | vedclass

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(B) Female heterogamety is a mechanism of sex determination where the female produces two different types of gametes. In birds,sex determination is of

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Birds

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(B) Female heterogamety is a mechanism of sex determination where the female produces two different types of gametes. In birds,sex determination is of the $ZW-ZZ$ type,where females are $ZW$ (heterogametic) and males are $ZZ$ (homogametic). In honey bees,sex determination is based on the number of sets of chromosomes (haplo-diploidy). Females are diploid $(2n = 32)$ and males are haploid $(n = 16)$. This is not considered female heterogamety in the traditional sense of sex chromosomes. Therefore,birds exhibit female heterogamety. The correct option is $B$.

Column-$I$	Column-$II$
$(P)$ $(X+O)$	$(i)$ Genetic constitution in Drosophila
$(Q)$ $(XX+XY)$	$(ii)$ Genetic constitution in grasshopper
$(R)$ $(ZZ+ZW)$	$(iii)$ Sex determination in birds
$(S)$ $(AA+XX)$	$(iv)$ Sex determination in humans

In which of the following organisms is female heterogamety observed?

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Match the following columns:
Column-$I$ Column-$II$
$(P)$ $(X+O)$ $(i)$ Genetic constitution in Drosophila
$(Q)$ $(XX+XY)$ $(ii)$ Genetic constitution in grasshopper
$(R)$ $(ZZ+ZW)$ $(iii)$ Sex determination in birds
$(S)$ $(AA+XX)$ $(iv)$ Sex determination in humans

The twenty-third pair of chromosomes in humans is known as:

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