The reduction of a gene pair to an allele during the formation of a gamete is called the principle of

i think the miocene epoch spans the time from 23 million to 12 million years ago.

all answers true and false

explanation:

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

did you fail the test? xd