How many genotypes does a trihybrid cross have?

27:9:9:9:3:3:3:1 ratio: As can be seen in the forked line diagram above, a trihybrid cross yields a phenotypic ratio of 27:9:9:9:3:3:3:1. This reflects the phenotypes generated by the 64 genotypic combinations resulting from 8 different male gametes fertilizing 8 different female gametes.

How many different offspring genotypes are expected in a Trihybrid?

How many different offspring genotypes are expected in a trihybrid cross between parents heterozygous for all three traits? How many phenotypes are expected if the traits behave in a dominant and recessive pattern? a. 64 genotypes; 16 phenotypes.

What is the ratio of a Trihybrid cross?

For a trihybrid cross, the F2 phenotypic ratio is 27:9:9:9:3:3:3:1. The forked-line method can be used to analyze a trihybrid cross.

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