In a dihybrid cross AAbb times aaBB, what proportion of the F2 offspring is expe

Question

In a dihybrid cross AAbb times aaBB, what proportion of the F2 offspring is expected to be homozygotic for at least one gene? a) 1/4 b) 1/2 c) 3/4 d) All are homozygotes. e) None are homozygotes. In the dihybrid cross AaBb times aabb, what proportion of individuals are expected to be homozygotic for both genes in the F1 generation? a) 1/4 b) 1/2 c) 3/4 d) All are homozygotes. e) None are homozygotes. 100 Among the dihybrid crosses below, which will produce a 1:1phenotypic ratio? a) AABB times aabb b) AaBb times AaBb c) AaBb times aabb d) AaBB times aaBB e) AAbb times aaBB

Explanation / Answer

Answer:

1) In a dihybrid cross AAbb x aaBB, what proportion of the F2 offspring is expected to be homozygotic for atleast one gene?

2) In a dihybrid cross AaBb x aabb, what proportion of individuals are expected to be homozygotic for both genes in the F1 generation?

3) Among the dihybrid cross below, which will produce a 1:1 phenotype ratio?

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