Practice Questions for Final Examination
EEMB 2 Introductory Biology (Evolution) - Summer

1. The theory that inheritable units of information (genes) would spontaneously change and
provide more variation was developed by…
a) George Buffon
b) Charles Lyell
c) George Cuvier
d) Hugo De Vires
e) Russell Wallace

2. In a population of frogs the dominant allele (A) codes for green skin, the recessive allele codes
for white skin and the heterozygote (Aa) codes for the expression of green with white spots.
What is the frequency of the dominant allele (A) in the population, given that each individual
produces 2 gametes, and that 50 individuals are homozygous dominant (AA,) 40 individuals
are heterozygous (Aa) and 10 individuals are homozygous recessive (aa).
a) 0.7
b) 0.2
c) 0.5
d) 0.6
e) 0.8

3. The number of eggs laid by a species of blue-bird through successive generations shows
relatively little variation. There are several equivocating factors that dictate this situation (e.g.
nutrition, predation, genetic factors, and the environment). This is an example of …
a) the bottleneck effect
b) stabilizing selection
c) genetic equilibrium
d) directional selection
e) genetic drift

4. During a large flood, a river changes its course separating a population of mice. After several
generations the mice in the daughter population display significant differences in their morphology
from the parental population. This situation is an example of …
a) ecological isolation
b) zygotic wastage
c) postzyogtic isolation
d) genetic incompatibility
e) geographic isolation

5. The collection of all the genes in a population of Flamingos found in Lake Victoria is termed the…
a) genome
b) genotype
c) gene locus
d) gene pool
e) genetic expression
Answers: 1. D 2. A 3. B 4. E 5. D

欢迎咨询51作业君