What is the main mechanism by which evolution occurs?(1 point)

Question

Responses

Artificial selection
Artificial selection

Natural selection
Natural selection

Genetic drift
Genetic drift

Gene flow
Gene flow
Question 2
Which of the following best describes natural selection?(1 point)
Responses

The movement of individuals from one population to another
The movement of individuals from one population to another

The process by which organisms choose their mates
The process by which organisms choose their mates

The random changes in allele frequencies in a population
The random changes in allele frequencies in a population

The process by which organisms with favorable traits survive and reproduce
The process by which organisms with favorable traits survive and reproduce
Question 3
What does the term "fitness" refer to in the context of evolution?(1 point)
Responses

Physical strength
Physical strength

The ability to avoid predators
The ability to avoid predators

The ability to find food
The ability to find food

The ability to survive and reproduce
The ability to survive and reproduce
Question 4
Which of the following is an example of a vestigial structure?(1 point)
Responses

Human appendix
Human appendix

Whale flippers
Whale flippers

Cat whiskers
Cat whiskers

Bird wings
Bird wings
Question 5
What is a mutation with respect to natural selection and evolution?(1 point)
Responses

A change in an organism's environment
A change in an organism's environment

A change in an organism's behavior
A change in an organism's behavior

A change in the DNA sequence of an organism
A change in the DNA sequence of an organism

A change in the population size for a specific organism
A change in the population size for a specific organism
Question 6
Which of the following best describes the difference between analogous and vestigial structures?(1 point)
Responses

Analogous structures perform similar functions and have the same evolutionary origin, while vestigial structures are fully functional and essential in all species.
Analogous structures perform similar functions and have the same evolutionary origin, while vestigial structures are fully functional and essential in all species.

Analogous structures are remnants of ancestral structures that no longer have a function, while vestigial structures perform similar functions in unrelated species.
Analogous structures are remnants of ancestral structures that no longer have a function, while vestigial structures perform similar functions in unrelated species.

Analogous structures perform similar functions in different species and have a common evolutionary origin, while vestigial structures are non-functional remnants of structures that were functional in ancestral species.
Analogous structures perform similar functions in different species and have a common evolutionary origin, while vestigial structures are non-functional remnants of structures that were functional in ancestral species.

Analogous structures have different evolutionary origins but perform similar functions, while vestigial structures are non-functional remnant of structures that were functional in ancestral species.
Analogous structures have different evolutionary origins but perform similar functions, while vestigial structures are non-functional remnant of structures that were functional in ancestral species.
Question 7
Which scientist is most closely associated with the theory of natural selection?(1 point)
Responses

Louis Pasteur
Louis Pasteur

Charles Darwin
Charles Darwin

Gregor Mendel
Gregor Mendel

Alfred Wegener
Alfred Wegener
Question 8
The similarity of the bone structures in the forelimbs of mammals is an example of:(1 point)
Responses

Homologous structures
Homologous structures

Analogous structures
Analogous structures

Convergent evolution
Convergent evolution

Divergent evolution
Divergent evolution
Question 9
Which of the following best explains how the finches on the Galapagos Islands demonstrate natural selection?(1 point)
Responses

The finches on the islands do not exhibit any variation in their beak shapes.
The finches on the islands do not exhibit any variation in their beak shapes.

The finches migrated to the Galapagos Islands from different continents
The finches migrated to the Galapagos Islands from different continents

Finches with beak shapes suited to their specific food sources survived and reproduced more successfully.
Finches with beak shapes suited to their specific food sources survived and reproduced more successfully.

All of the finches have the same beak shape because they eat the same food.
All of the finches have the same beak shape because they eat the same food.
Question 10
Which of the following pairs are examples of analogous structures?(1 point)
Responses

Butterfly wing and bird wing
Butterfly wing and bird wing

Whale flipper and cat paw
Whale flipper and cat paw

Human arm and bat wing
Human arm and bat wing

Dog leg and horse leg
Dog leg and horse leg
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Answer 1

Here are the answers to your questions about evolution:

Question 1: What is the main mechanism by which evolution occurs?

• Natural selection

Question 2: Which of the following best describes natural selection?

• The process by which organisms with favorable traits survive and reproduce

Question 3: What does the term "fitness" refer to in the context of evolution?

• The ability to survive and reproduce

Question 4: Which of the following is an example of a vestigial structure?

• Human appendix

Question 5: What is a mutation with respect to natural selection and evolution?

• A change in the DNA sequence of an organism

Question 6: Which of the following best describes the difference between analogous and vestigial structures?

• Analogous structures have different evolutionary origins but perform similar functions, while vestigial structures are non-functional remnants of structures that were functional in ancestral species.

Question 7: Which scientist is most closely associated with the theory of natural selection?

• Charles Darwin

Question 8: The similarity of the bone structures in the forelimbs of mammals is an example of:

• Homologous structures

Question 9: Which of the following best explains how the finches on the Galapagos Islands demonstrate natural selection?

• Finches with beak shapes suited to their specific food sources survived and reproduced more successfully.

Question 10: Which of the following pairs are examples of analogous structures?

• Butterfly wing and bird wing

Feel free to ask if you have more questions!