NEET BIOLOGY

Detailed explanation-1: -"In peas, an allele for tall plants (T) is dominant over the allele for short plants (t). An allele of another independent gene (i.e, this gene is not located on the same chromosome as the gene for tallness) produces smooth peas (S) and is dominant over the allele for wrinkled peas (s).

Detailed explanation-2: -1 In pea plants, the allele for tall stems is dominant to the allele for short stems. A heterozygous tall plant is crossed with a short plant, and 100 offspring are produced. 2 The nucleus in a body cell of a fly contains 12 chromosomes.

Detailed explanation-3: -A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because tallness is the dominant trait. Thus, tallness is the dominant trait.

Detailed explanation-4: -In F1 generation, the cross between TT and tt will result in all tall plants. Thus, tallness is the dominant trait. Whenever two traits of a character are crossed, the F1 plants show only one of the traits, this trait is called as the dominant trait.