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.

Explanation:

First of all you need to have ss because this is recessive.

Secondly there is 2 option for Dominant one

It could be Ss or SS so if you wanna know what is what you need to use recessive gen

S- ss if all genes are hybrid dominant one would be SS if some genes aren’t hybrid dominant one would be Ss

yes, because even though a theory has a  lot of evidence to support it, it is not always true