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Evolution of Populations

Total questions: 15

Worksheet time: 16mins

Name
Class
Date
1.

In the HW Equation, the variable that represents frequency of heterozygous genotype is

a)

p

b)

q

c)

p2

d)

2pq

e)

q2

2.

In the HW Equation, the variable that represents frequency of homozygous recessive individuals is

a)

p

b)

q

c)

p2

d)

2pq

e)

q2

3.

In the HW Equation, the variable that represents frequency of dominant alelle is

a)

p

b)

q

c)

p2

d)

2pq

e)

q2

4.

What frequency does p2 + 2pq represent based on HW equation?

a)

frequency of individuals with dominant trait

b)

frequency of individuals with recessive trait

c)

frequency of dominant allele

d)

frequency of recessive allele

5.

Which of the following processes is least likely to increase genetic variation?

a)

crossing over

b)

mutation

c)

long generation times

d)

rapid reproduction

6.

A coconut from Island A is carried across the ocean along its currents to Island B where it grows a new, novel population. This is an example of

a)

founder effect

b)

gene flow

c)

mutation

d)

natural selection

e)

random mating

7.

Methicillin-resistant Staphylococcus aureus (MRSA) is a bacterium that causes infections in different parts of the body. It's tougher to treat than most strains of Staphylococcus aureus -- or staph -- because it's resistant to some commonly used antibiotics. MRSA is an example of

a)

founder effect

b)

gene flow

c)

natural selection

d)

population bottleneck

e)

random mating

8.

By far the greatest threats to Florida panthers are habitat loss, fragmentation and degradation — all driven by Florida's burgeoning human population and the developments and highways that accommodate it. Without room to roam, male Florida panthers clash, often with fatal consequences; with its restricted size and absolute isolation, the panther population remains particularly vulnerable to fatal diseases and parasites. This is an example of

a)

founder effect

b)

genetic drift

c)

gene flow

d)

natural selection

e)

random mating

9.

The size of chickens bred and mass produced by farmers has increased drastically as human consumption of chicken meat has increased, as shown in the illustration. This is an example of

a)

stabilizing selection

b)

disruptive selection

c)

directional selection

d)

artificial selection

10.

The birth weights of human babies lie in the range of 3-4kg (6.6-8.8 pounds). Babies who are much smaller or much larger suffer higher rates of mortality as shown in the data table. This is an example of

a)

stabilizing selection

b)

disruptive selection

c)

directional selection

d)

artificial selection

11.

According to an article on New Scientist, the gene that causes cystic fibrosis may persist in human populations because, although two copies of it kill, having just one copy protects against tuberculosis, researchers say. This is an example of

a)

frequency-dependent selection

b)

heterozygote advantage

c)

relative fitness

d)

sexual dimorphism

12.

Which of the following conditions could result in microevolution?

a)

large population size

b)

no gene flow

c)

no mutations

d)

no natural selection

e)

nonrandom mating

13.

A generation of cats has a total population of 800 cats, 672 black and 128 white. Black is dominant to white. What is the q value of this population?

a)

0.16

b)

0.36

c)

0.4

d)

0.48

e)

0.6

14.

The beak color of finches has a complete dominance relationship where black beaks are dominant over yellow beaks. There are 210 individuals with the genotype DD, 245 individuals with the genotype Dd and 45 individuals with the genotype dd. What is the value of p?

a)

0.09

b)

0.21

c)

0.3

d)

0.49

e)

0.7

15.

Scale coloration of lizards has a complete dominance relationship where green scales are dominant over blue scales. There are 1,024 individual lizards in a population. There are 960 green lizards and 64 blue lizards. What is the approximate frequency of heterozygote lizards?

a)

6.25%

b)

25%

c)

37.5%

d)

56.25%

e)

75%