Population Genetics II

1) Use this table to calculate the genotypic frequencies in the F1, in response to selection.

2) Which genotype is favored? Will the 'a' allele be lost from this population?

3) What will be the final gene frequency of p, if this selection continues?

4) Selection cannot perfectly adapt an organism to their environment, because selection cannot maximize growth and reproduction at the same time. Explain, relating the components of fitness to finite energy budgets.

5) Distinguish between directional and stabilizing selection.

6) Which type of selection is responsible for speciation?

7) List four post-zygotic isolating mechanisms. How can sterility that occurs as a consequence of chromosomal non-homology be overcome? Think of an older topic...

8) Speciation and evolution are different processes. define each and explain the difference.

9) The rate at which a population evolves is dependent upon 4 things, basically similar to the agents of evolutionary change. List these factors that influence the rate at which a population evolves.

10) What predictions does the neutral model make with respect to the rates of substitution between functional and non-functional regions of proteins and DNA? Are these predictions supported by the data?

11) If we can measure the rate of substitutional change in a protein, how can we use this 'molecular clock' to determine when the common ancestor between two species lived? Is this phylogeny, constructed with molecular data from species walking around on the planet today, consistent with the phylogeny based on the fossil record?

12) How did Eldridge and Gould use Mayr's model of peripatric speciation to explain why the fossil record appears 'discontinuous' for some lineages.

13) What were Darwin's three dilemmas and how were they solved?