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Mutations, Natural Selection and Adaptations

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.
________ are changes in genetic material. 
a)
Genes
b)
Mutations
c)
Variations
d)
Biology
2.
Differences in traits are called _________ and explain why siblings don't look exactly alike.
a)
mutations
b)
variations
c)
traits
d)
evolution
3.
Traits can be inherited or influenced by ______ factors, like the sun. 
a)
environmental
b)
mutation
c)
variation
d)
genetic
4.
Genetic traits are passed from ________ to ________.
a)
parent; offspring
b)
chromosomes; traits
c)
DNA; genes
d)
offspring; parents
5.

A physical or behavioral trait an organism is born with that helps it survive is -

a)

A mutation

b)

An adaptation

c)

Genetic variation

d)

Gene flow

6.
Change in a gene or chromosome
a)
evolution
b)
variation
c)
mutation
d)
adaptation
7.

True or False. All mutations are harmful.

a)

True

b)

False

8.
What are the three types of mutation? 
a)
Insertion, Deletion, Subsitution
b)
Deletion, Newstion, Subsitution 
c)
Newstion, Deletion, Insertion 
d)
Insertion, Newstion, Substitution 
9.
The survival of a species depends on its ability to adapt to changes in the environment. Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment?
a)
Mutations are a source of variation in the species
b)
Mutations are the cause of disease in the species
c)
Mutations are not harmful when they occur in somatic cells
d)
Mutations are always passed on to subsequent generations
10.

Chameleons are reptiles that have the ability to hide from predators and prey by blending in with their environment. They can change the pattern and/or color of their skin. This ability is known as --

a)

natural selection

b)

imitations

c)

mimicry

d)

camouflage

11.

A mutation in which one base pair is swapped for another, and the code is changed but doesn't move over

a)

addition

b)

deletion

c)

substitution

d)

mutation

12.

A mutation can be...

a)

harmful

b)

helpful

c)

neutral

d)

harmful or helpful, but never neutral

e)

harmful, helpful, AND neutral

13.
A group of organisms of the same species
a)
ecosystem
b)
community
c)
population
d)
group
14.
Survival of the Fittest and Evolution were proposed by what scientist?
a)
Charles Darwin
b)
Albert Einstein
c)
Steven Hawking
d)
Isaac Newton
15.
A change in DNA.
a)
Competition
b)
Mutation
c)
Species
d)
Fitness
16.
Organisms with the most beneficial traits will survive.  This is commonly known as ___.
a)
theory of evolution
b)
variations
c)
survival of the fittest
d)
ecosystems
17.
Mutations are a change in what?
a)
DNA
b)
tRNA
c)
genotype
d)
phenotype
18.
Why are advantageous traits more likely to be passed onto offspring?
a)
Because they are more likely to survive and reproduce.
b)
Because they come from dominant alleles.
c)
Because they come from recessive alleles.
d)
Because the trait is an acquired phenotype.
19.
Occurs when a population of organisms cannot adapt quickly enough to environmental changes.
a)
Evolution
b)
Adaptation
c)
Selective Pressure
d)
Extinction  
20.
How quickly do animals develop adaptations?
a)
in a week
b)
over a year
c)
over generations
d)
throughout their life
21.
Desert plants must have special adaptations to
a)
get rid of water
b)
get and store sand
c)
get and store oxygen
d)
get and store water
22.
Differences between members of the same species are called:
a)
variations
b)
predators
c)
selections
d)
traits
23.
How do indivual organisms get adaptations?
a)
The organism gets new body parts as the environment changes.
b)
Adapations are random-nothing determines whether or not an organism gets one.
c)
The organism inherits traits through its genes.
d)
Magic 
24.

Breeding two cows to produce more milk and meat is natural selection

a)

true

b)

false

25.

When humans get involved in breeding animals for particular traits, this is known as

a)

artificial selection

b)

natural selection

c)

traits

d)

gene therapy

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