1.Give anexample of each of the following;a.Vestigial structureâ
b.Homologous structureâ
c.Homoplastic structureâ
2.What is natural selection andwhat are Darwinâs mechanisms for natural selection? Be specific andthorough.
3.How do the following differ:directional selection, stabilizing selection, and disruptiveselection?
4.Pick one of thefollowing and thoroughly explain: gene flow,founderâseffect, genetic bottleneck, or naturalselection.
5.If a population of 1000individuals has 160aa genotypes, 480Aagenotypes, and360 AA genotypes, the allelefrequency of the dominant allele (A) is:
6. Fill inthe table.
| Contributes to EvolutionaryChanges (yes or no) |
| |
| |
| |
| |
| |
| |
7. Fill inthe table with the reproductive isolating mechanisms beingdescribed:
Reproductive IsolatingMechanism | |
| Similar species have structuraldifferences in their reproductive organs. |
| Interspecific hybrid dies atearly stage of embryonic development |
| Gametes of similar species arechemically incompatible. |
| Offspring of interspecifichybrid are unable to reproduce. |
| Similar species reproduce atdifferent times. |
| Interspecific hybrid survivesto adulthood but is unable to reproduce successfully |
| Similar species havedistinctive courtship behaviors. |
8.Zeamaysis thescientific name of the corn plant. Zeais the ____________name.
A.âclass
B.âdivision
C.âgenus
D.âordinal
E.âspecies
9.Shared ancestral characters mayalso be called:
A.âheteroplasticcharacters.
B.âsynapomorphiccharacters.
C.âpleisomorphiccharacters.
D.âoutgroups.
E.âpheneticcharacters.
10.Contrast the following terms:monophyletic, paraphyletic, and polyphyletic. Provide one examplefor each.
11.Which of the followingclassification systems is being described: cladistic,classical evolution, phenetic system.?
__________âSimilarities of manycharacters
__________âShared derivedcharacters
__________âSharedancestral characters and sharedcharacters.
