B and b represent, respectively, the dominant and recessive alleles of a gene pair. Half of the F1 generation expresses the recessive condition, and the other half expresses the dominant condition. What are the most likely genotypes of the P generation

Bb and bb

Explanation:

The most likely genotypes of the parental generation would be Bb and bb.

If Bb and bb are crossed, such that:

                       Bb    x    bb

offspring:     Bb   Bb   bb   bb

Bb = 2/4 = 1/2 = 50%

bb = 2/4 = 1/2 = 50%

hence;

1/2 or 50%% of the offspring would express the dominant condition in the form of Bb and the remaining 1/2 or 50% of the offspring will express the recessive condition in the form of bb.

multiplying and dividing the two decimals and the eqations by the same number of the overalls