1. Species Y and Z have very different genes. Species A and B have only a few different genes. What is most likely true about these species? (1 point)

Species Y and Z are more closely related to each other than species A and B are to each other.
Species A and B are more closely related to each other than species Y and Z are to each other.
Species Y is the ancestor of species A and species Z is the ancestor of species B.
All four of these species are probably equally related to each other.