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

Albinism is

When heterozygous tall plants are self-pollinated than tall and dwarf plants are obtained, this is explain to

Barr bodies are

An organism which receives identical alleles of a particular gene from both parents is