2. In order from left to right, to which groups do the chromosomes shown belong? 3. Describe an individual with the karyotype shown.

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

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

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