Arrange the following plants with respect to an increasing number of chromosomes:
Rice,Maize,Apple

Match List-$I$ with List-$II$ :

List-$I$	List-$II$
$A$. Incomplete Dominance	$I$. Human skin colour
$B$. Co-dominance	$II$. Inheritance of flower colour in Antirrhinum sp.
$C$. Pleiotropy	$III$. Phenylketonuria disease in humans
$D$. Polygenic inheritance	$IV$. $ABO$ blood group

Choose the correct answer from the options given below :

In what context does an epistatic gene differ from a dominant gene?

Choose the correct sequence of True $(T)$ and False $(F)$ statements:
$(i)$ Queen Elizabeth shows a number of haemophilic descendants.
$(ii)$ Variation in blood group prevalences is due to incomplete dominance.
$(iii)$ Drosophila has three pairs of autosomal chromosomes.
$(iv)$ In birds,the female is heterozygous.

Match the List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. $\text{ABO}$ blood group	$i$. Same phenotypic and genotypic ratio
$B$. Human skin colour	$ii$. Pleiotropy
$C$. Phenylketonuria	$iii$. Multiple allele
$D$. Incomplete dominance	$iv$. Polygenic inheritance

'Eugenics' pertains to