Epistasis is the phenomenon of suppression of phenotypic expression of gene by a nonallelic gene which shows its own effect. A dominant epistatic allele suppresses the expression of a nonallelic gene whether the latter is dominant or recessive. For example, fruit colour of Summer Squash (Cucurbita pepo) is governed by a gene which pruduces yellow colour in dominant state (Y-) and green colour in recessive state (yy).

Correct Option: B

Epistasis is the phenomenon of suppression of phenotypic expression of gene by a nonallelic gene which shows its own effect. A dominant epistatic allele suppresses the expression of a nonallelic gene whether the latter is dominant or recessive. For example, fruit colour of Summer Squash (Cucurbita pepo) is governed by a gene which pruduces yellow colour in dominant state (Y-) and green colour in recessive state (yy).

In codominance both alleles are independently expressed in the heterozygote.

Correct Option: C

In codominance both alleles are independently expressed in the heterozygote.

All alleles of a gene are situated on the same loci of chromosome in organisms.

Correct Option: B

All alleles of a gene are situated on the same loci of chromosome in organisms.

The possibility of resultant blood group may be A, B, AB and O.

Correct Option: B

The possibility of resultant blood group may be A, B, AB and O.

Mendel did not use pod length for his experiment.

Correct Option: A

Mendel did not use pod length for his experiment.