Have you been to the Galapagos islands?

Darwin's important observations pertaining to the birds of the Galapagos Islands was?

• A. there were many different finches, each with specifically adapted wings for flight. B. there were many different finches on the island, each with specifically adpated beaks for feeding. C. all the finches on the various islands have the same beak and are of the same species. D. all the finches on the various islands had the same wing structure and are of the same species. E. finches eat various different types of food, such as seeds, insects, or fruit and thus must be of different species. Punctuated equilibruim refers to which of the following? A. short periods of rapid speciation separated by periods of slower evolutionary change. B. Adaptive radiation C. Convergent Evolution D. Gradualism E. Artificial Selection In a population with two alleles for a particular locus, B and b, the allele frequency of B is 0.7. What would be the frequency of heterozygotes if the population is in Hardy-Weinberg equilibrium? 0.7 0.49 0.21 0.42 0.09 a cause of genetic attribute to colonization by a limited number of individuals from a parent population. contributed to the evolutionary divergence of Darwin's finches after strays from the south american mainland reached the remote galapagos islands A. Genetic drift B. Founder effect C. Bottleneck effect D. gene flow changes in the allele frequencies in a population due to immigration and emigration of individuals into/out of the population A. genetic drift B. founder effect C. bottleneck effect D. gene flow the average height of the wildflower yarrow increases the further south the yarrows live. this variation is an example of A. a cline B. polymorphism C. assortative mating D. the founder effect E. genetic drift Selection acts directly on _______ which adapts a population to its environment. A. Phenotypes B. genotypes C. the entire genome D. each allele E the entire gene pool

• Answer:

  Darwin's important observations pertaining to the birds of the Galapagos Islands was? B. there were many different finches on the island, each with specifically adpated beaks for feeding. Punctuated equilibruim refers to which of the following? A. short periods of rapid speciation separated by periods of slower evolutionary change. In a population with two alleles for a particular locus, B and b, the allele frequency of B is 0.7. What would be the frequency of heterozygotes if the population is in Hardy-Weinberg equilibrium? 0.42 2 * p * q = 2 * 0.7 * 0.3 = 0.42 a cause of genetic attribute to colonization by a limited number of individuals from a parent population. contributed to the evolutionary divergence of Darwin's finches after strays from the south american mainland reached the remote galapagos islands B. Founder effect Bad question. I picked the answer most likely to be marked correct. Do you know why it's bad? Hint: variation is more likely to result in divergence than a limited gene pool from founder effect. Second reason it's bad: founder effect is a subtopic of genetic drift. changes in the allele frequencies in a population due to immigration and emigration of individuals into/out of the population D. gene flow (When I was in school, this was just called "migration." One wonders why this less sensible name became more prevalent.) the average height of the wildflower yarrow increases the further south the yarrows live. this variation is an example of A. a cline Selection acts directly on _______ which adapts a population to its environment. A. Phenotypes