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Mendel's Law and Genetics

How do you apply Mendel's law to solve this problem?

You have three yellow, round peas, labeled I, II, and III, and each was grown into a plant and crossed to a plant grown from a green, wrinked pea. There were 100 peas issuing from each cross were sorted into phenotypic classes as shown below:

I. 52 yellow, round
48 green, round

II. 100 yellow, round

III. 24 yellow, round
26 yellow, wrinkled
25 green, round
24 green, wrinkled

What were the genotypes of I, II, and III?

Solution Preview

The cross must be

yellow, round X green, wrinked

result in


The key cross here to deduce the dominance is II, which have the cross:

yellow, round X green, wrinked

result in

100 all yellow, round

So the ...

Solution Summary

The solution provides calculations for various genotypes by applying Mendel's Law.