Reference no: EM133311284
Assignment:
1. In the simulation, what does the black and white speckled background represent?
2. After 1950 and beyond, the lichens begin to re-grow on the trees. This is explained by what?
3. When all the moths of one color were eaten, why did moths of that color still appear in subsequent years?
- The moths re-evolved.
- New moths came into the population.
- The alleles for both colors were still present in the population.
- The birds stopped eating the moths.
4. Do you think your population was evolving? Explain using evidence from the online lab simulation to support your answer.
5. What mechanism caused the allele frequencies to change over time? Explain using evidence from the online lab simulation to support your answer.
6. If all of the moths containing the gene for white spots were eaten, what would have happened to the moths after 1950 when lichens started to grow on the tree trunks again? Why?
7. Why is it essential for a population to contain genetic diversity?
8. If the frequency of an allele becomes one or zero, what has happened to that population in regard to that gene?
9. If the frequency of an allele becomes 1.0, generally speaking, is that a "good thing" or a "bad thing" for a population? Support your answer using 3 to 5 explanation sentences.
10. If there is a population of 400 pepper moths, 80 display the dark color pattern. Let us assume that the gene for dark coloration is recessive to light coloration in the peppered moths. If we conducted a survey of the moths displaying the light color pattern and found that 50% of them were homozygous for the allele controlling color pattern, what is the frequency of the dark color allele?
Note: You must show your worked calculations to receive credit. Failure to show your work will result in a zero for this question, even if you put the correct numbers/final answer. The final answer must be supported with calculations.