if the dominant allele factor us essential for sight and the factor B results in blindness no matter what other genes are present, then the ratio of blind to normal offspring of the cross aaBbxAabb will be
a.1:1
b.1:3
c.2:1
d.3:1
I think the answer is 1:1 because that combination has only one of each dominant trait so there's a fifty percent chance.
Also....
Which of the following crosses would probably yield completely homozygous recessive offspring?
a.TtRtxttRr
b.TtrrxTTrr
c.TtRrxttRR
d.TtRRxTTrr
I think D is right but im not sure why.