Question 5

F1 generation genotype is: BbTt

chestnut pacer genotype (double recessive) is : bbtt


F1 generation black trotter x chestnut pacer

BbTt x bbtt

Use a Punnett square diagram to determine the predicted outcome of this cross:


Thus the predicted phenotypes and their expected ratios are as follows:

black trotter = 1 (25%)

black pacer = 1 (25%)

chestnut trotter = 1 (25%)

chestnut pacer = 1 (25%)



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