In guinea pigs, brown fur (B) is dominant over white fur (b). Design a Punnett square
to demonstrate the possible outcome if a homozygous brown guinea pig is crossed
with a homozygous white guinea pig.
What percentage of the offspring will have white fur?
0%
25%
50%
100%
50% of the offspring will have white fur.
Punnett square:
| | B | B |
|---|---|---|
| b | Bb | Bb |
| b | Bb | Bb |
All of the offspring will be heterozygous for brown fur (Bb). Half of them will inherit the recessive white fur allele from the white guinea pig parent, resulting in 50% of the offspring having white fur.