Question

Note: Respond to All Questions That Are Highlighted In Yellow Color from Part A To B. Thanks you

Shepherd the zygotes from the ideal population around their life cycle with no migration, and to the new gene pool with no mutation. Has the frequency of allele A changed from its starting value of 0.8? Why or why not? Think a bit more about why your first simulation might have produced genotype frequencies among the zygotes that were different from our ideal expectations. Reset PopCycle and once again set the frequency of allele A in the gene pool to 0.8. Now start making zygotes by clicking on the gene pool. Watch the graph of zygote genotypes as it grows. As you make more and more zygotes, how do the genotype frequencies compare to the proportions of the ideal expectation? A to juveniles with 100% survival to adulthood B.

Answer 1

A. The frequency of allele will change from 0.8 in the next generation as the simulation uses a fixed population size. For the allele frequency to remain unchanged apart from the coditions of absolute fitness, no migration and no mutation, the population size should be infinite but as only a fixed number of zygotes are being shepherd to adulthood, it is expected that the allele frequency may not remain the same.

B. As mentioned in A, the genotype frequency has deviated from ideal expectation because of fixed number of zygotes studied in the simulation. As this is addressed and more and more zygotes are added, the frequency of A will be closer to 0.8 or ideal expectation of no change of allele frequency from generation to generation.

The popluation size is an important consideration in determinig the allele frequencies over generations as random genetic drift which can lead to alteration in allele frequencies is common in small population . The effect of random genetic drifts decreases with increase in population size.