AP BIOLOGY

Detailed explanation-1: -Dominant alleles are seen as an uppercase of a letter; for example, B. Recessive alleles are seen as a lower case of a letter; b. In order for a person to show the dominant trait, one of the person’s parents must have the dominant trait (which is an uppercase letter).

Detailed explanation-2: -In maize, coloured endosperm (C) is dominant over colourless (c) and full endosperm (R) is dominant over shrunken (r). When a dihybrid of F1 generation was test crossed, it produced four phenotype in the following percentage. Coloured and Full = 45% Coloured-Shrunken = 5%

Detailed explanation-3: -There are different types of dominance: incomplete dominance, co-dominance and complete dominance.

Detailed explanation-4: -dominance, in genetics, greater influence by one of a pair of genes (alleles) that affect the same inherited character. If an individual pea plant with the alleles T and t (T = tallness, t = shortness) is the same height as a TT individual, the T allele (and the trait of tallness) is said to be completely dominant.