Exam 3: The Modern Synthesis

Male soapberry bugs adjust their mate-guarding behavior in

When no other force, such as natural selection, is operating, genotypic frequencies reach the Hardy-Weinberg equilibrium. The proportions for alleles A and a will be

Peas were a useful subject for Mendel's experiments because they have a number of

Imagine a population of 0 AA, 60 Aa, and 40 aa individuals. What is the frequency of each allele in this population?

An organism expresses antipredator tactics regardless of the number of predators in the environment. This is an example of

Explain why offspring are usually intermediate between their parents even though the nineteenth-century concept of blending inheritance was ruled out by the modern synthesis.

To understand how Mendelian genetics helps to explain evolution, we need to look closely at what happens to genes in populations that are undergoing natural selection. This is the domain of

Briefly describe five reasons that evolution does not always lead to the best possible phenotype, and give an example for each.

Explain how natural selection can shape flexible behavioral responses.

Characters are more likely to exhibit continuous variation when

When a population reaches fixation, which of the following is true?

Constraints on adaptation include

What are the allelic frequencies of the following population: 0 AA, 100 Aa, and 100 aa individuals?

Evolutionary change is best defined as a change in allele frequency over

Which of the following is true of geneticists at the beginning of the twentieth century?

Which of the following increases genetic variation?

The compound eye cannot evolve into the camera-type eye because

Which of the following is true when genes at many loci affect a character?

How can small population size affect gene frequencies? When is fixation reached?

Which of the following decreases genetic variation?