Free Printable CAX ASB Hardy Weinberg

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CAX ASB Hardy Weinberg

Total questions: 24

Worksheet time: 39mins

Name

Class

Date

Which Hardy-Weinberg equation represents the genotype frequencies in a population?

p + q = 1

p2 + 2pq + q2 = 1

p2 + pq2 + q2 = 1

p + 2pq + q3 = 1

Which Hardy-Weinberg factor represents the frequency of heterozygous individuals in a population?

2pq

p2 + 2pq

What do you call all of the genes in a population?

Gene pool

Relative Frequency

Genetic Drift

Allele pool

A few deer wander out of their native woods into a completely new park where no deer had ever been before. They go on to create an entirely new population.

Genetic Drift

Natural Selection

Non-random mating

Mutation

Genetic drift is likely to be seen in a population

That has a low mutation rate

In which natural selection is occurring

That is very small

For which environmental conditions are changing

What does the Hardy-Weinberg equilibrium measure?

changes in allele frequencies

numbers of mutations

goodness of fit

genetic diversity

In the Hardy-Weinberg Equation, q² is the frequency of what?

The recessive allele

the dominant allele

the recessive genotype

the dominant genotype

The Hardy-Weinberg Model is...

available at local hobby stores and retailers throughout the Greater Tazewell area.

a mathematical tool that biologists can use to predict allele frequencies and determine whether or not evolution is occurring within a population.

always occurring within individual organisms in nature.

only useful in the lab and cannot be practically applied to real-world populations of organisms.

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).

0.09

0.42

0.49

0.21

10.

The allele frequency of p=.20 What is the percentage of Heterozygous Dominant genotype?

.80

.04

.32

.64

11.

The allele frequency of p=.20 What is the percentage of recessive genotype?

.80

.04

.32

.64

12.

What does the variable q represent?

Frequency of the heterozygote genotype

Frequency of the homozygous recessive genotype

The frequency of the recessive allele

The frequency of the dominant allele

13.

Which is a mechanism for change in allele frequency?

gene flow

genetic drift

natural selection

all answers are correct

14.

A chance occurrence that negatively affects a population because the population is small.

genetic drift

mutation

speciation

migration

15.

What does the Hardy-Weinberg equilibrium measure?

changes in allele frequencies

numbers of mutations

goodness of fit

genetic diversity

16.

Which of the following statements is supported by the graph below?

The population is in Hardy-Weinberg equilibrium, as the sum of the frequency of the dominant allele and the recessive allele is always equal to 1

The percentage of individuals homozygous recessive for this particular trait is increasing over time

Selection has caused frequencies to change over time because individuals with a dominant allele survive at higher rates than individuals with recessive alleles

Individuals who are homozygous recessive for this particular trait have migrated into the population, causing the frequency to approach 1

17.

What is the best explanation for a population being described as an evolutionary unit?

Population can evolve, not individuals

Natural selection only involves individuals, not populations

Genetic changes only occur in populations

A population's gene pool remains the same throughout time

18.

Evolution is a Change in (a) Frequency

19.

How often an allele occurs in a population is called the ________ __________. It’s usually given as a percentage of the total population, e.g. 35%, or a number, e.g. 0.35.

(a)

20.

New alleles are usually generated by mutations in genes

(a)

21.

The allele frequencies of a population can be calculated using the _________ - ________ equations, and used to see if the population is changing over time

(a)

22.

The Hardy-Weinberg principle predicts that the frequencies of alleles in a population __________ ___________ from one generation to the next.

won’t change

will change

has changed

keeps altering

23.

If the allele frequencies __ ________between generations in a large population then immigration, emigration, natural selection or mutations have happened.

stay the same

do change

don·t change

24.

The total frequency of all possible genotypes for one characteristic in a certain population is ______. So the frequencies of the individual genotypes must add up to ______

0 and 0

2.0 and 2.0

1.0 and 2.0

1.0 and 1.0

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CAX ASB Hardy Weinberg

Total questions: 24

Worksheet time: 39mins

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