Question

In guinea pigs, rough coats (with lots of swirly cowlicks) are dominant over smooth coats. If a male homozygous dominant guinea pig is crossed with a female heterozygous guinea pig, what are the possible genotypes and phenotypes of the offspring? Complete the Punnett square and the percentages of rough and smooth coated offspring.

***Please follow all Punnett square rules to complete this question. (Letters and numbers, only)

Please use the following: Rough = R and Smooth = r

Answer 1

The possible genotypes of the offspring are RR and Rr, while the possible phenotypes are rough and smooth coats. The Punnett square shows a 50% chance of rough coated offspring and a 50% chance of smooth coated offspring.

Step-by-step explanation:

The possible genotypes of the offspring in this cross are RR and Rr, and the possible phenotypes are rough (RR and Rr) and smooth (rr). To complete the Punnett square, you would write the homozygous dominant male genotype (RR) along the top of the square and the heterozygous female genotype (Rr) along the side. The resulting Punnett square would show 50% chance of rough coated offspring (genotypes RR and Rr) and a 50% chance of smooth coated offspring (genotype rr).