Directions: The following question is based on the food web (below). Which organism acquires energy from both producers and consumers? Select only ONE answer choice. 

Given the observed genotype frequencies below, what would the expected frequencies be under Hardy-Weinberg? *Hint: first calculate ‘p’ and ‘q’ then determine the predicted values for the genotype frequencies under Hardy-Weinberg. AA Aa aa 0.3 0.1 0.6

You are given the following information about a population: There are two alleles, C and c C is dominant to c C codes for blue hair and c codes for white hair The frequency of the c allele is 0.6 The population is comprised of 100 individuals. Assuming the population is in Hardy-Weinberg equilibrium, how many individuals have blue hair?

Is this population at Hardy-Weinberg equilibrium? AA Aa aa 0.4 0.51 0.09 Hint: calculate the allele frequencies: p(A) and q(a) and then remember that under Hardy Weinberg equilibrium p2+ 2pq +q2= 1.  With the allele frequencies calculated you can come up with the expected frequencies for AA, Aa, and aa under Hardy-Weinberg.  If these expected frequencies match the frequencies you actually see above it is in HW equilibrium

Directions: The following question is based on the food web (below).  Predict the impact of increased human fishing of anchovies on the sizes of populations of other organisms in this food web. See the table below for answer choices.  Choose ONE column (A-D) that best matches the most plausible outcome in terms of changes in the population sizes of various organisms in this food web. Select only ONE answer choice.

A population of 18 frogs has the following number of frogs of different genotypes:  AA = 6, Aa = 7, aa = 5, What is the frequency of the A allele in the population?

 In what kind of populations do we tend to see genetic drift working most quickly (the least number of generations)?

In a population of birds on an isolated island, it is found that females have a strong preference for mating with males based upon their appearance – resulting in fierce competitions, showy feathers, and creative displays by the males.  Is this population in Hardy-Weinberg equilibrium?

You are given the following information about a population: There are two alleles, C and c C is dominant to c C codes for blue hair and c codes for white hair The frequency of the c allele is 0.4 The population is comprised of 100 individuals. Assuming the population is in Hardy-Weinberg equilibrium, how many individuals have blue hair?

In a population of frogs, the following is the starting allele frequency: A1 A2 A3 A4 0.19 0.30 0.01 0.50 Which allele is most likely to go to fixation (that is, to be the last allele remaining in the population)?