Sexual reproducation leads to

In a gene pool, along with beneficial mutations those mutations also exists which are damaging to an individual. It has been found that these mutations are irreversible because

$I.$ they have survival value

$II.$ they are acquired

$III.$ they are recessive and carried by heterozygous individuals only

$IV.$ they show genetic drift

Choose the incorrect option for given statement

The genes controlling seven traits in pea studied by Mendel were later found to be located on following number of chromosomes

The character that is expressed in the $F_{1}$-generation is called the

Continuous variations are attributed to

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