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Population Genetics and Selection

Total questions: 23

Worksheet time: 1hrs 8mins

Name
Class
Date
1.
Which of the following is not an assumption required for Hardy-Weinberg equilibrium?
a)
Random mating
b)
No mutations
c)
Population size must fluctate
d)
No selection is occuring
2.
A population is in Hardy-Weinberg equilibrium. The gene of interest has two alleles, with 16% of the population portraying the recessive phenotype. Which percentage of the population is heterozygous?
a)
48%
b)
36%
c)
16%
d)
24%
3.
In the Hardy-Weinberg theorem, p refers to what?
a)
The frequency of the dominant allele.
b)
The frequency of the homozygous genotype.
c)
The frequency of the recessive allele.
d)
The frequency of the homozygous dominant.
4.
In the Hardy-Weinberg Equation, q2 is the frequency of what?
a)
The recessive allele 
b)
the dominant allele
c)
the recessive genotype
d)
the dominant genotype
5.
If 98 out of 200 individuals in a population express the recessive phenotype, what percent of the population would you predict would be heterozygous?
a)
70%
b)
30%
c)
42%
d)
49%
6.
Which Hardy-Weinberg equation represents the genotype frequencies in a population?
a)
p + q = 1
b)
p2 + 2pq + q2 = 1
c)
p2 + pq2 + q2 = 1
d)
p + 2pq + q3 = 1
7.
Which Hardy-Weinberg factor represents the frequency of heterozygous individuals in a population?
a)
p2
b)
2pq
c)
q2
d)
p2 + 2pq
8.
A population of frogs has 37 individuals who are brown in color and 194 individuals who express the dominant green color. What is the dominant allele frequency for this population?
a)
0.2
b)
0.4
c)
0.6
d)
0.8
9.
What do you call all of the genes in a population?
a)
Gene pool
b)
Relative Frequency
c)
Genetic Drift
d)
Allele pool
10.
A population of 150 individuals has an allele frequency of 0.3 for the dominant allele (B) and a frequency of 0.7 for the recessive allele (b). Use the Hardy-Weinberg equation to determine the frequency of the genotype (bb).
a)
0.09
b)
0.42
c)
0.49
d)
0.21
11.
Determine the expected numbers of organisms with genotype BB if the frequencies are as follows in a population with a total size of 150: f(BB)=0.16, f(Bb)=0.48, and f(bb)=0.36. 
a)
24
b)
72
c)
54
d)
150
12.

In a Hardy-Weinberg population, the frequency of the a allele is 0.4. What is the frequency of individuals with Aa genotype?

a)

0.16

b)

0.48

c)

0.20

d)

0.60

13.

A butterfly population has a rare homozygous recessive form hh that occurs at a frequency of 0.04.

The population is in Hardy-Weinberg equilibrium for the trait.

What is the frequency of the homozygous dominant form?

a)

0.02

b)

0.98

c)

0.64

d)

0.32

14.

In a population that is in Hardy-Weinberg equilibrium, the frequency of the homozygous recessive genotype is 0.09. What is the frequency of individuals that are homozygous for the dominant allele?

a)

0.7

b)

0.42

c)

0.21

d)

0.49

15.

The frequency of a dominant allele is 0.6. What is the frequency of its recessive allele?

a)

0.3

b)

0.12

c)

0.4

d)

0.16

16.

Use the following information to answer the questions below.

Albinism is a hereditary disease due to the absence of the skin pigment melanin. The allele for albinism is recessive to the allele for normal pigmentation. One person in 10,000 is an albino.

What is the frequency of the dominant allele?

a)

0.01

b)

0.10

c)

0.09

d)

0.99

17.

Use the following information to answer the questions below.

Albinism is a hereditary disease due to the absence of the skin pigment melanin. The allele for albinism is recessive to the allele for normal pigmentation. One person in 10,000 is an albino.

What is the frequency of the dominant allele?

a)

0.01

b)

0.10

c)

0.09

d)

0.99

18.

Use the following information to answer the questions below.

Albinism is a hereditary disease due to the absence of the skin pigment melanin. The allele for albinism is recessive to the allele for normal pigmentation. One person in 10,000 is an albino.

What is the frequency of carrier?

a)

0.02

b)

0.20

c)

0.32

d)

0.48

19.

Use the following information to answer the questions below.

Albinism is a hereditary disease due to the absence of the skin pigment melanin. The allele for albinism is recessive to the allele for normal pigmentation. One person in 10,000 is an albino.

What is the number of individuals in this population who are carriers?

a)

100

b)

200

c)

150

d)

250

20.

In a population in Hardy-Weinberg equilibrium, 16% of the individuals show the recessive trait. What is the frequency of the dominant allele in the population?

a)

0.36

b)

0.4

c)

0.6

d)

0.84

21.

In a type of mammal, genes for the albino is recessive to the brown hair genes. In an investigation, it was found that 72 out of 500 mammals are albino. What is the albino allele frequency in that population?

a)

0.75

b)

0.50

c)

0.38

d)

0.29

22.

In a population of cows at genetic equilibrium, 750 cows have long horns (dominant trait), while remaining 250 cows have short horns (recessive traits). What is the frequency of dominant allele?

a)

0.25

b)

0.5

c)

0.67

d)

0.75

23.

In a population of cows at genetic equilibrium, 1500 cows have dominant grey coat, while the remaining 500 cows have recessive white coat. If all the white coat cows were sold and the remaining cows were left to breed randomly, what is the number of white coat cows in the next generation of 1000 cows?

a)

109

b)

250

c)

442

d)

500