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Biology, 03.07.2019 10:50 screamqueen

Only 2 i cant get 1. the graph below shows the change in average beak size of a given bird population. records indicate that a drought occurred in 1977. which of the following is the most probable explanation for the observations? 1st picture a. a larger beak made it easier to compete for the limited food remaining. in response, the birds grew larger beaks. b. the seeds available after the drought were large and tough. working hard to crack those seeds the birds grow larger beaks over time. c. there were only soft seeds available after the drought. more birds chose to develop larger beaks in order to collect and eat the seeds. d. after the drought, only large seeds were available to eat. birds with large beaks were better able to crack and eat these seeds. 2. the wing color of a certain species of moth is controlled by alleles at a single locus. gray (g) is dominant to white (g). a scientist studied a large population of these moths, tracking the frequency of the g allele over time, as shown in the figure below. 2nd picture assuming that the population was in hardy-weinberg equilibrium for this gene, what percentage of the moth population was homozygous recessive (gg) in 1975? (2 points) a. 25% b. 36% c. 64% d. 75%

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