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Compare and contrast inbreeding and outbreeding depression?
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- Calculate selection for the following scenario. In a population of prairie dogs living on a prairie, prairie dogs with genotype aa have 8 offspring per year on average, those with genotype Aa have 4 offspring per year on average, and those with genotype AA have 3 offspring per year on average. Round selection to the nearest hundredth, report selection as a value ranging from "0.00" to "1.00" Selection on genotype Aa: Selection on genotype AA: Selection on genotype aa: Which genotype has the highest fitness? Fill in the blank with homozygous dominant, heterozygous, or homozygous recessiveIn a population the homozygous dominant individuals made up 70% of the population, while heterozygous ones made up 21%, and recessive made up 9%. What are the frequencies of the A and a alleles?Threatened species often have small, isolated populations where mating between relatives occurs. Let's assume one of these threatened species has a disease controlled by a gene that has two alleles A and a. Only individuals with two copies of the "a" allele have the disease and die before reproducing. Question: What are the effects of inbreeding on the frequency of the "a" allele, and the frequency of the disease in the population?
- Explain how negative frequency-dependent selection works.You observe some bark beetles with different feeding behaviors. You find that the behavioral phenotypes you observed are closely associated with the following genotypes. genotype phenotype number observed BB feeds under bark 60 Bb feeds on top of bark 24 bb feeds on leaves 16 a) What are the allele frequencies and the expected number (out of 100 beetles) of genotypes? b) Calculate the Chi-Squared value (c2). Then look up the p-value using this Chi-squared calculator: https://www.mathsisfun.com/data//chi-square-calculator.html Enter “1” for Degrees of Freedom. (There are 3 genotype categories, but only 1 DF because they are not fully independent—calculated from just 2 allele frequencies). The p-value is the probability that you would see the deviance you observed by chance, assuming the null hypothesis is true). Report both values. Is the population in H-W equilibrium? c) If you answered “No” to b): Provide at least three biologically…Biologists classify specific forms of traits as good or bad. For example, long tails in cats could be classified as good and short tails as bad. true or false?
