Genetic Frequency (Inheritance)

Practice Question Solving
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Consider two traits that segregate independently. The two parents have a total of 156 offspring that express 4 different phenotypes distributed as follows: 89, 31, 28 and 8. What are the parents’ genotypes?

A: Aa BB x Aa bb
B: Aa Bb x Aa Bb
C: aa bb x AA Bb
D: AA Bb x AA Bb
E: aa BB x aa BB

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Hi!

a cross of AaBb X AaBb following independent assortment will give a pheno ratio of: 9:3:3:1 which is about 90:30:30:10 given here
Answer is B)

Hope this helps!