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5 Agents of Evolutionary Change

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Ethan, Zoe, and Henry observed a group of birds in their backyard. They noticed that some birds were able to gather more food and thus had more offspring. This observation can be defined as "differential reproductive success". What is this process called?

a)

mutation

b)

natural selection

c)

HWE

d)

gene flow

2.

Charlotte, Zoe, and Evelyn are studying evolution. They come across a statement: 'Populations evolve, NOT individuals.' Considering this, is the the statement is true or false?

a)

TRUE

b)

FALSE

3.

In a biology class, Aria and Mason were discussing about evolution. Aria mentioned that variation within populations is the raw material for evolution and mutation is one way that variation can occur. Mason was curious and asked, 'What is another way for variation to occur within a population, Aria?'.

a)

Through sexual reproduction

b)

Through asexual reproduction

c)

Through cloning

4.

Aiden was studying about genetics in his biology class. He learned that mutations are rare and random changes in the ______ of an organism. He was curious to know more about it.

a)

phenotype

b)

DNA

c)

biological fitness

d)

adaptive survival

5.

Anika, Emma, and Isla are studying the movement of individuals into or out of a population in their biology class. This concept is known as gene _______.

a)

flow

b)

mutation

c)

drift

d)

equilibrium

6.

In small populations, individuals that carry a particular allele may leave more descendants than other individuals, just by chance (NOT due to biological fitness). Over time, a series of chance occurrences can cause an allele to become more or less common in a population. This agent of evolutionary change is known as genetic ____.

a)

equilibrium

b)

drift

c)

change

d)

adaptation

7.

When a large population is drastically reduced by a chance event (not fitness) such as famine or loss of habitat, the loss of variation narrows the gene pool of the population. The cheetah is a great example of this agent of evolutionary change resulting from the __________ effect.

a)

founder

b)

natural selection

c)

bottleneck

d)

non-random mating

8.

The series of events shown here represent evolution through ________________________.

a)

Genetic Drift

b)

the Founder Effect

c)

Natural Selection

d)

Gene Flow

9.

A peahen has chosen this male with which to mate. The allele frequency within this population of peacocks could possibly change due to which agent of evolutionary change?

a)

mutation

b)

gene flow

c)

genetic drift

d)

non-random mating

10.

Which finger represents gene flow?

a)

pointer

b)

middle

c)

ring

d)

thumb

11.

Which finger represents genetic drift which results in a small population?

a)

pointer

b)

middle

c)

thumb

d)

little

12.

In a population of mice, the frequency of the [recessive] p allele = .45. What would be the frequency of the q allele?

a)

.35

b)

.55

c)

.20

d)

1

13.

In a population of 100 mice, 20 have white fur. Black fur (B) is dominant to white fur (b). In this population, what is the frequency of the mice with white fur? 
In other words, 
What is the frequency of the recessive allele?

a)

.20

b)

.45

c)

1

d)

.55

14.

In generation 1 of a mouse population, the value of p = .70 and the value of q = .30. In generation 2, these values are the SAME (allele frequencies have NOT changed). Is this population in H.W.E.?

a)

YES

b)

NO

15.

Noah, Abigail, and Kai are studying for their biology exam. They come across a hypothetical scenario where all agents of evolutionary change are removed from a population of butterflies in their local park. They realize that if the allele frequencies of these butterflies do not change over time, the population would be in a state of _______________________ Equilibrium.

a)

Laurel and Hardy

b)

Darwinian

c)

Hardy-Weinberg

d)

Natural