Exam 21: Evidence and Mechanisms of Evolution

In several species of insects, males with large testes often have better mating success but take longer to develop than those with small testes. Such a pattern is an example of a(n) _______.

The differential contribution of offspring to the next generation by various genetic types belonging to the original population is known as _______.

Which of the following statements about biological evolution is false?

Sexual recombination

Why do most scientists and historians give Darwin more credit than Wallace regarding their contributions to evolutionary theory?

Which of the following is not required for a population at Hardy-Weinberg equilibrium?

Tim Birkhead and his colleagues were able to boost the immune systems of male zebra finches and increase their attractiveness to females by

Which of the following is most likely responsible for the low number of inversion types seen in North American populations of Drosophila suboscura?

Which of the following principles of Darwin's theory were guided by his reading of the economist Thomas Malthus?

Use the following to answer questions: In a population of 200 individuals, 72 are homozygous recessive for the character of eye color (cc). One hundred individuals from this population die from a fatal disease. Thirty-six of the survivors are homozygous recessive. -How many heterozygous individuals are expected in the new population?

Evolution may be constrained by

Charles Darwin and _______ independently articulated the concept of natural selection.

Assuming that there are only two alleles at a given locus, if the frequency of one allele is 0.6, what is the frequency of the other allele?

Discuss the main application of the Hardy-Weinberg rule in evolutionary biology.

The artificial selection experiments with bristle number in Drosophila illustrate which of the following generalities?

Which of the following is least likely to help maintain genetic variation?

Which of the following is not a disadvantage of sexual reproduction?

Suppose that in a population of diploid organisms, a certain gene has only two alleles and mating is random (with respect to this gene, at least). Draw a graph showing how the frequency of heterozygotes in the population would vary depending on the frequency of the alleles in the population, assuming Hardy-Weinberg equilibrium. Hint: On the y-axis, plot the frequencies of heterozygotes as the frequency of one allele (on the x-axis) increases from 0 to 1 in intervals of 0.1 (0, 0.1, 0.2, etc.).

Which of the following statements about the 1918-19 influenza pandemic is false?

In Tim Birkhead's study of zebra finches, male birds fed water with added carotenoids