They can have As geneticists both can be either (bb) because most brown-eyed people have homozygous for the relevant.
Answer:
Using the number of amino acid differences, it would appear that the two birds are more closely related (had a common ancestor very recently), while the two fungi would have to trace their common ancestry much farther back in time (much more distantly related).
Cause mammals are the only species that are well developed before birth unlike marsupial and monotremes