NEET BIOLOGY

Detailed explanation-1: -For Example: In chickens, the allele for black feathers is co-dominant with the allele for white feathers. These chickens will have BOTH black and white feathers.

Detailed explanation-2: -Examples of codominance in animals include speckled chickens, which have alleles for both black and white feathers, and roan cattle, which express alleles for both red hair and white hair.

Detailed explanation-3: -When working problems with incomplete dominance, NO small letters are used in the Punnett square. Instead, all traits are represented by CAPITAL LETTERS. For example, black Andalusian chickens have BB genes for feather color (black feathers). White Andalusian chickens have WW genes for feather color (white feathers).

Detailed explanation-4: -In the given case, the generation of black and white speckled offspring is an example of inheritance known as codominance, not multiple alleles.