In a certain species of animals, black fur (B) is dominant over brown fur (b). Predict a genotype and phenotype of the offsprings when both parents are Bb or have heterozygous black fur.

In a homozygous pea plant, axial flowers (A) are dominant over terminal flowers (a). Draw a Punnett square board to show the gametes and offsprings when both the parent plants are heterozygous for axial flowers.

In Mendel's experiments, tall pea plants (T) are dominant over dwarf pea plants (t). Draw a Punnett square board to show the gametes and offspring when both the parents are heterozygous for tallness.

In a homozygous plant round seeds (R) are dominant over wrinkled seeds (r): Draw a Punnett square to show the gametes and offspring when both the plants have heterozygous round seeds (Rr).

A brown eyed couple has a blue- eyed child . The trait of brown eye (B) is dominant over blue-eye (b). What is the genotype of the couple ?

In rabbit black skin (B) is dominant over brown skin (b) and short hair (S) is dominant over long hair (s). If homozygous black-short haired male is ceossed with a homozygous brown-long haired female. All F_(1)- offspring are heterozygous black-short haired. F_(1) male crossed with F_(1) female. In F_(2) generation what is the percentage of homozyhous black-short haired offspring :-

In rabbits the gene for grey fur (G) is dominant over that of black fur (g). In a litter, if 50% rabits are grey, the possible parental cross combination is

In an animal assume that rough coat (R ) is domiant over smooth coat (r ) and the black (B) is dominant over white (b). Consider that these two pairs of alleles assort independently then (i) What proportion of the offspring from the cross RrBb xx "RRBB" would be rough and black ? (ii) From the cross RrBB xx rrBB . how many progeny will be homozygous for both of the characters ?

(a) Work out cross between a tall pea plant bearing violet flowers (heterozygous for both) with a dwarf pea plant having white flowers. Write the genotypes and phenotypes of the progeny along with their ratios. (b) Name such a cross and state its importance.

In mice, black coat colour (allele B) is dominant to brown coat colour (allele b). The offspring of a cross between a black mouse (BB) and a brown mouse (bb) were allowed to interbreed. What percentage of the progeny would have black coats ?