PATHOLOGY

Detailed explanation-1: -In guinea pigs, rough coat (R) is dominant over smooth coat (r). A rough-coated guinea pig is bred to a smooth one, giving eight rough and seven smooth-coated progeny in the F1s.

Detailed explanation-2: -In guinea pigs, the allele for a rough coat (R) is dominant over the allele for a smooth coat (r). A heterozygous guinea pig (Rr) and homozygous recessive guinea pig (rr) have a total of nine offspring. The Punnett square for this cross shows a 50 percent chance that any particular offspring will have a smooth coat.

Detailed explanation-3: -In guinea pigs, black fur (B) is dominant over white fur (b) and rough four ( R ) is domiant over smooth fur ( r ) . A cross between two Guinea pigs hybrid for both traits (BbRr x BbRr) produces some offsprings that have rough, black fur and some that have somooth, black fur.

Detailed explanation-4: -In guinea pigs, black fur color (B) is dominant to white (b). A white male guinea pig, whose parents were both black was bred with a female with black fur whose father had black fur and mother has white.