According to this phylogenetic tree, which bear is most closely related to the American black bear? bears.jpg

The geographic isolation of a population from other members of the species and the subsequent evolution of reproductive barriers between it and the parent species describes ________.

Which of the following processes is the ultimate source of new genetic material?

Define evolution in your own terms. Give an example of evidence of evolution from your textbook reading. Also  give an example of evolution in action (current news in evolution). 

Hormone function

Chemical nature of agonists

Endocrine function

Endocrine anatomy

Regulation of hormone activity.

Compare/contrast endocrine glands.