HELP WITH BIOLOGY!!!!!! NEED HELP WITH THE BEAK OF FINCH BY JONATHAN WEINER!?

Question

I've read the book beak of the finches by jonathan weiner but i could not find the answers to these questions. Please try to answer them, you do not have to answer all.

Chapter 13

1. How have the finch populations on Daphne Major responded to the changing adaptive landscape?

2. How might hybridization aid in a species' shift to a new adaptive peak in the landscape?

Answer 1

1. When the original finch species arrived, it had one beak shape which worked well for a certain type of food. As population pressure increased and/or food sources changed, different beak shapes (due to mutation) proved beneficial for different food types (insects, seeds, worms, etc).

2. Hybridization would produce a new, potentially advantageous, adaptation more quickly that random variation since it would take place in a single generation.  

Answer 2

haha -- you typed weiner