1. Using the information provided in Figure 16-3 answer the following questions. Competition for resources plays a key role in natural selection.

A) Give two ways that competition for food might have influenced the evolution of the large tree finch.

B) The phylogeny of the finches above show multiple speciation events originating from a single species. What is this specific process called?

2. The Hardy-Weinberg Equation shows how you could determine the relative frequency of alleles in a gene pool. It can be shown with two equations, as shown below.

p + q = 1

Where p is the frequency of the dominant gene and q is the frequency of the recessive gene.

p² + 2pq + q² = 1

Where p² is frequency of dominant homozygous individuals, 2pq is the frequency of heterozygous individuals, and is the frequency of q² homozygous recessive individuals.

Use blue eyes and brown eyes in a population as an example of how this equation works:

There are 22 blue eyed recessive homozygous individuals out of a population of 100.

What is the frequency of all three possible allele combinations (recessive homozygous, dominant homozygous, and heterozygous)?

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