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
what is the genotype ratio (BB:Bb) of the F1 generation? Use the above punnett square
A. 1:1
B. 3:1
C. 1:3
D. none of the above
The genotype ratio of the F1 generation can be determined by examining the punnett square.
In the F1 generation, there are 4 offspring (2 on the top row, 2 on the left column).
Out of these 4 offspring, 3 have the genotype Bb and 1 has the genotype BB.
Therefore, the genotype ratio of the F1 generation is 3:1 (BB:Bb).
The correct answer is B. 3:1.