NEET BIOLOGY

Detailed explanation-1: -Thus the mating of two heterozygous black mice produces the expected ratio of 3 black : 1 brown offspring.

Detailed explanation-2: -For mice black (B) is dominant phenotype and white (b) is recessive. In certain experiment, a black male mouse of genotype Bb is crossed with a white female of genotype bb. Show with the help of a chart that, when baby are produced, the ratio of black and white will be 1:1.

Detailed explanation-3: -Complete answer: The probability that a white mouse that is homozygous for long fur and a mouse heterozygous for both traits can have an offspring with short white fur is 0. Let us understand this by analysing the genes responsible for the traits and how they are inherited by the progeny.

Detailed explanation-4: -The dominant color in mice from black and white is black. The recessive gene in the black mice is in codominant and incomplete dominance with the white allele. However, the black mice have different recessive genes.