The figure shows a cross between 2 rabbits in rabbits black fur (B) is dominant to brown fur (b)
BbxBb
Top left B
Top right b
Left top B
Left bottom b
Wat is the percentage of bb what we would expect of the F1 generation?
In the F1 generation, the two rabbits in the cross are Bb and Bb.
To determine the percentage of bb rabbits in the F1 generation, we need to consider that the brown fur allele (b) is recessive and will only be expressed if both alleles are b.
In this cross, there is a 25% chance of producing a bb genotype in each offspring. This is because there are four equally likely combinations of alleles: BB, Bb, Bb, and bb.
Therefore, we can expect 25% of the F1 generation to have the bb genotype.