If you cross Bb with bb what's is the genotype ratio?

Genotype ratio 1:1, there are two types of genotype BB and Bb in equal ratio.

Phenotype ratio 1:0, because all offspring have allele B. “B” is dominant and there is no bb genotype, so recessive trait will not be shown.

Explanation:

I don't know about the ration but it's going to be 25% chance for them to have an offspring with blue eyes as there is a presence of a dominant allele

the fossil record provides evidence of a common ancestor to many species.

layer 3 is younger than layer 6.