Question

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

Gene flow

Genetic drift

Artificial selection

Natural selection
What does the term "fitness" refer to in the context of evolution?(1 point)

The ability to find food

The ability to survive and reproduce

The ability to avoid predators

Physical strength
What is a mutation with respect to natural selection and evolution?(1 point)

A change in the population size for a specific organism

A change in an organism's behavior

A change in the DNA sequence of an organism

A change in an organism's environment
Which of the following best describes the difference between analogous and vestigial structures?(1 point)

Analogous structures perform similar functions and have the same evolutionary origin, while vestigial structures are fully functional and essential in all 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 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.
Which scientist is most closely associated with the theory of natural selection?(1 point)

Louis Pasteur

Charles Darwin

Alfred Wegener

Gregor Mendel
The similarity of the bone structures in the forelimbs of mammals is an example of:(1 point)

Divergent evolution

Convergent evolution

Analogous structures

Homologous structures
Which of the following pairs are examples of analogous structures?(1 point)

Human arm and bat wing

Butterfly wing and bird wing

Dog leg and horse leg

Whale flipper and cat paw

Answer 1

1. Natural selection

2. The ability to survive and reproduce

3. A change in the DNA sequence of an organism

4. 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.

5. Charles Darwin

6. Homologous structures

7. Butterfly wing and bird wing