Genetic drift is the effect of chance or luck on the survival and reproductive success of individuals. A flood kills 95% of an isolated population of white-footed mice. Which is a possible effect of genetic drift on this population?
1 point
1
Question 2
2.
Ichthyosaursa were aquatic dinosaurs. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are-
1 point
1
Question 3
3.
A DNA molecule is shown in the diagram below. What part of the DNA molecule is represented by the structure labeled 1?