Question

Alleles are ___.

• A. total set of genes present on a chromosome
• B. total chromosomes present in a genome
• C. two alternative forms of a character
• D. two alternative forms of a gene

Answer 1

The correct option is D two alternative forms of a gene

Each character in an organism is determined by a gene. Every gene usually has at least two alternative forms called alleles. They control the two alternative forms of a character. For example, if we consider the character height, there can be two traits tall and short. Thus, there are two alelles for the gene one for tallness and one for shortness.