Explain this image in a few sentences. Make certain to note what the image represents and who drew the image. Darwin_tree.gif

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

A population of 1,000 birds exists on a small Pacific island. Some of the birds are yellow, a characteristic determined by a recessive allele. The others are green, a characteristic determined by a dominant allele. A hurricane on the island kills most of the birds from this population. Only ten remain, and those birds all have yellow feathers. Which of the following statements is true?

Describe two specific macroevolution events that have lead the the diversity on the planet today. Describe what occurred during these events.

Which of the following pairs represents homologous structures?

Assume a population of salamanders is migrating south from Oregon and into California.  When these organisms reach the Sierra Nevada Mountains, the population will split into two populations.  One population is residing on the eastern slopes and a second population inhabiting the western slopes of the mountain range.  What type of speciation will most likely take place?

Anatomy of the pancreas

Hormone function.

Endocrine terminology.

Regulation of hormone release.