Which of the following phenomena leads to var | vedclass

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(C) Mutation refers to a sudden,heritable change in the genetic material $(DNA)$ sequence,which introduces new alleles into a population.Recombination

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Mutation,recombination

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(C) Mutation refers to a sudden,heritable change in the genetic material $(DNA)$ sequence,which introduces new alleles into a population.Recombination occurs during meiosis (crossing over) and results in new combinations of genes that are different from the parental combinations.Both mutation and recombination are primary sources of genetic variation in organisms.Linkage,on the other hand,tends to keep genes together and reduces the frequency of recombination,thereby limiting variation.

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

Which of the following phenomena leads to variation in $DNA$?

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$(A)$ $A$ pleiotropic gene exhibits multiple phenotypic effects.
$(B)$ Multiple alleles express similar phenotypic expressions.
$(C)$ Polygenes exhibit continuous variation.

$A$: Antlers in male deer are sex-influenced traits.
$R$: These are controlled by autosomal genes which are influenced by the sex of the bearer.

Mother and father both have blood group '$A$'. They have two children,one with blood group '$O$' and the second one with blood group '$A$'. They have:

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

The genetic constitution of an individual is represented by:

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