Question

7. Answer the following after setting the assortative mating setting to 1 and running the simulation for greater than 100 generations.  

1. After greater than 100 generations what is the new allele frequencies?  

2. Did the assortative mating favor either allele? .

3. Which other population parameter was affected by the change in assortative mating?  

4. Which mechanism of evolution was illustrated by the change in assortative mating?

8. Answer the following after changing the Genotype Relative Fitness for white koi to 0.5. Continue the simulation through 100 generations.

1. What are the allele frequencies after 100 generations?  

2. What are the genotypic frequencies after 100 generations?

3. Why is the frequency of q not equal to 0.0, even if the frequency of the white koi is zero?

4. Which type of mechanism of evolution is demonstrated by the reduced genotype relative fitness experiment?

5. Which change to the genotype relative fitness parameters would simulate a natural selection pattern of stabilizing selection?

Answer 1

• when population are large, mating is random and the environment is stable(i.e. no natural selection)- the frequency pf allele tends to remain stable from generatio to generation
• assortative mating on its own does not affect allele frequencies, when it is combined with natural selection they can have a significant affect on the rate of change in the allele frequencies at locus subject to assortative mating
• non random mating.
• genetic drift, migration, mutation, selection, non random mating
• when a population in Hardy weinberg equilibrum for a gene it is not evolving and allele frequncy will stay the same across generation.
• if the two allele freuency in a population P and Q then expected genotype frequnce are P^2, 2PQ and Q^2. if the are only two allele at a locus, then P+Q is equals to one so the genotype have no change
• hardy weinberg equilibrum
• natural selection, fitness, natural selection on traits determined by multiple genes may take the form of stabilizing selection, directional selection or disruptive selection