Is it a purebred or a hybrid?

In Guinea pigs, the allele for a smooth coat (S) is dominant over the allele for a rough coat (s). Explain how you could find out whether a guinea pig with a smooth coat is a hybrid or a purebred.

Question

Kelton Whitehead

Biology

24 October, 23:16

Is it a purebred or a hybrid?

In Guinea pigs, the allele for a smooth coat (S) is dominant over the allele for a rough coat (s). Explain how you could find out whether a guinea pig with a smooth coat is a hybrid or a purebred.

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Answers (1)

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Alannah Walsh · Answer 1

Cross the smooth coat with a rough coat guinea pig

Genotype of rough coat will be ss (homozygous recessive)

If the genotype of smooth coat is SS (purebred), then;

cross: SS x ss = All offsprings will be smooth coat with genotype Ss

If the genotype of smooth coat is Ss (hybrid), then

cross: Ss x ss = Ss, Ss, ss and ss. 50% of the offspring will be smooth coat and 50% of the offspring will be rough coat.

Hence, by doing this cross test, one can identify whether the guinea pig is purebred or a hybrid.

Is it a purebred or a hybrid?In Guinea pigs, the allele for a smooth coat (S) is dominant over the allele for a rough coat (s). Explain how you could find out whether a guinea pig with a smooth coat is a hybrid or a purebred.

Is it a purebred or a hybrid?

In Guinea pigs, the allele for a smooth coat (S) is dominant over the allele for a rough coat (s). Explain how you could find out whether a guinea pig with a smooth coat is a hybrid or a purebred.