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Q1) You suspect that gene Z has been under positive selection. You sequence this

ID: 269629 • Letter: Q

Question

Q1) You suspect that gene Z has been under positive selection. You sequence this gene for multiple individuals in both Species 1 and Species 2. You determine the total number of synonymous and nonsynonymous substitutions as classified within species (i.e., Polymorphisms) and between species (i.e., Species fixed differences). Your data are presented in the table below. You can conclude that...

gene Z has been under positive selection

only synonymous sites in gene Z affect fitness

gene Z has not been under positive selection

it's not possible to determine if gene Z has been under positive selection

Q2) Which of the following is NOT a component of the Neutral Theory?

_________ will result in increased genetic variation between populations and decreased genetic variation within populations

Balancing selection

Q4) Some variants are more successful at surviving and reproducing than others in a given population. Which principle of Darwinian evolution does this statement describe?

Species fixed differences Polymorphisms Nonsynonymous 7 2 Synonymous 12 6

Explanation / Answer

Q2) All evolution is determined by natural selection

Q3) Genetic drift

Q4) Principle of selection.