Comprehensive Homework #1

You should answer each question with a 400-word answer and in complete sentences and with CITATIONS.

1) In domestication of wild mustard (Brassica rapa), humans have created various vegetables by selecting for different parts of the plant (Figure 1). How has selection been used to domesticate dogs? Focus your discussion on skulls, Figure 2.

Figure 1. Selection for particular organs has resulted in several vegetable types. Figure 2. Skulls of good boys and girls.

2. Reference figure 14 (page 17) in your book. This image is from Huxley’s Evidence as to Man’s Place in Nature and depicts Huxley’s and Darwin’s hypothesis for the evolution of humans. Has molecular evidence supported or refuted this hypothesis? Why or why not?