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In the phrase survival of the fittest, to what does the term fittest refer?
Species
generation
Camouflage
mutation
An organism with favorable genetic variations will tend to survive and breed successfully.
Injurious
adaptation
The best-adapted organisms
A(n) ________________ is any variation that makes an organism better suited to its environment.
Species
generation
Camouflage
mutation
An organism with favorable genetic variations will tend to survive and breed successfully.
Injurious
adaptation
The best-adapted organisms
Which word describes the majority of permanent genetic mutations?
Species
generation
Camouflage
mutation
An organism with favorable genetic variations will tend to survive and breed successfully.
Injurious
adaptation
The best-adapted organisms
The average span of time between the birth of parents and that of their offspring is known as a(n)
Species
generation
Camouflage
mutation
An organism with favorable genetic variations will tend to survive and breed successfully.
Injurious
adaptation
The best-adapted organisms
Which of these best illustrates natural selection?
Species
generation
Camouflage
mutation
An organism with favorable genetic variations will tend to survive and breed successfully.
Injurious
adaptation
The best-adapted organisms
What is any permanent change in a gene or a chromosome (the DNA) called?
Species
generation
Camouflage
mutation
An organism with favorable genetic variations will tend to survive and breed successfully.
Injurious
adaptation
The best-adapted organisms
__________________________ is an adaptation that enables an organism to blend into its environment.
Species
generation
Camouflage
mutation
An organism with favorable genetic variations will tend to survive and breed successfully.
Injurious
adaptation
The best-adapted organisms
A group of organisms that share similar characteristics and can reproduce among themselves
Species
generation
Camouflage
mutation
An organism with favorable genetic variations will tend to survive and breed successfully.
Injurious
adaptation
The best-adapted organisms
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