Q. Alleles are :

Q. Alleles are :

(a) Heterozygous

(b) Different Phenotypes

(c) True breeding homozygotes

(d) Different molecular forms of a gene

Solution :

Correct option : A
An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.