Answer:
1. B. Organisms best adapted to their environment have the highest fitness.
2. D. Aa & aa.
3. A. Populations within a species must be reproductively isolated.
4.A. An adaptation increases the fitness of the individual.
5. C. The point at which two groups shared a common ancestor.
6.D. All living things share a universal code.
- A. The principle of common descent is the idea that all living & extinct organisms shared a common ancestor at some point in their evolutionary history.
- D. The allele for white fur would probably increase as natural selection works on the population.
- B. The bottleneck effect.
10.C. Adaptive radiation & convergent evolution.
