In guinea pigs black coat colour governed by the B gene is a

In guinea pigs, black coat colour (governed by the B gene) is a completely dominant trait, and white (attributed by the b allele) is a recessive trail. When heterozygous black pigs are intercrossed, the chance of the first two offspring having black coat colour is: more than 75% 44% 56% 6% none of the previous

Solution

Answer; 9/16

P1:Bb x Bb

F1= 1/4BB, 1/2Bb, 1/4bb

Probability of black coat offspring = ¾

Probability of second offspring with black coat = ¾

Total probability = ¾ x ¾ = 9/16