Q1. If a mutation appears in one individual that changes one base in a DNA sequence to another base, and the population is evolving by genetic drift, over time that mutation will:
a) Always take over and displace the old sequence.
b) Disappear half the time and completely displace the old sequence half the time.
c) Disappear most of the time.
d) Always disappear
Q2. When a DNA sequence is mutated, the individuals with that mutated sequence must also:
a) Have corresponding changes in some trait like size or color.
b) Be in a different population from the individuals with the older sequence.
c) All have the same mutation at the same time.
d) A mutation in a DNA sequence doesn't imply anything else about that individual.
Q3. To determine how related two wolves are using DNA sequences, you would look for a sequence that:
a) Has very little or no selection on any position in the sequence.
b) Has certain positions in the sequence that are under selection.
c) Is under strong selection, so some mutations lead to better survival than others.
d) Is directly related to a trait like size or color that you can see.
Q10. From the evolutionary tree for dogs and wolves in the lab workbook (Exercise 6: Wolves and Dogs), how many times do you infer that dogs were domesticated from wolves?
a) None; dogs were domesticated from coyotes
b) Once
c) More than once
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