Cumulative Final Exam Potential Questions and Correction of Exams 1-4
BIOL 1202, Fall 2010
Exam 1:
1. Natural selection is a _______.
2. Who developed the first mechanism for evolution?
3. What observation was the critical one first made by Darwin?
4. Darwin’s finches on the Galapagos Islands are an example of _______.
5. “Super bugs” (antibiotic resistant bacteria) are an example of _______.
6. If Endler (the biologist studying the evolution of male color patterns in Trinidad guppies)
had instead transferred guppies from a pool with no predators to one with pike cichlids
(voracious predators), then _______.
7. The similar anatomy of sugar gliders and flying squirrels is an example of _______.
8. What provides for evidence for evolution? List.
9. Which statement is correct about natural selection?
It produces perfectly adapted individuals.
It affects traits with no genetic basis.
It works at the population level.
It is the source of all genetic variation.
10. 4% of specific population of plants has white flowers (CWCW). What fraction of the
population are heterozygotes (CRCW), assuming Hardy-Weinberg equilibrium of the
alleles at the locus?
11. What suggests genetic drift might have occurred in a species?
12. The loss of genetic variation in Prairie chickens occurred because of _______.
13. The presence of copper-resistant grasses in fields near (but not on) copper mines
probably suggests _______.
14. Which statement is correct about mutation?
Mutation rates are too low to explain changes in allele frequency.
Most mutations are deleterious in natural populations.
Most mutations are hidden in heterozygotes or are selectively neutral.
Mutation is the source of variation acted upon by selection.
15. Selection on human birth weight is an example of _______.
16. A slow change in gene frequency across geographic distance is probably a _______.
17. An increase in fitness of a rare allele is _______.
18. Sickle cell anemia is common in the tropics because of _______.
19. In which case might sex likely evolve or be maintained?
One cell animal reproducing by binary fission
All genetic variants in the offspring have the same fitness
When genetically variable offspring are adaptive to fight parasites
20. If males in a bird species spend all their time brooding eggs on the nest, while females
invest little in reproduction, based on sexual selection, _______.
21. Which does not limit natural selection being able to produce adaptation?
Phylogenetic constraints
Trade-offs between pairs of traits
Small population size and genetic drift
Lack of genetic variation
