General Science and Nature

A

Organisms descend from a common ancestor without accumulating modifications.

B

Organisms descend from a common ancestor and accumulate modifications over time.

C

Organisms descend from multiple ancestors and undergo random modifications.

D

Organisms descend from multiple ancestors without modifications.

Explanation Comments

A

Convergent evolution

B

Divergent evolution

C

Parallel evolution

D

Adaptive radiation

Explanation Comments

A

They have different functions but similar structures.

B

They arise due to convergent evolution.

C

They are found in unrelated species.

D

They provide evidence of common ancestry.

Explanation Comments

A

Natural selection

B

Artificial evolution

C

Gene flow

D

Genetic drift

Explanation Comments

A

Monomorphism

B

Polymorphism

C

Pleiotropy

D

Dimorphism

Explanation Comments

A

Mechanical isolation

B

Hybrid inviability

C

Temporal isolation

D

Geographic isolation

Explanation Comments

A

Sympatric speciation

B

Microevolution

C

Parapatric speciation

D

Allopatric speciation

Explanation Comments

A

Homology

B

Gene family expansion

C

Convergent evolution

D

Polyploidy

Explanation Comments

A

All of the above

B

Mutation

C

Gene flow

D

Genetic drift

Explanation Comments

A

Frequency of the recessive allele

B

Frequency of heterozygous individuals

C

Frequency of the dominant allele

D

Frequency of homozygous dominant individuals

Explanation Comments

All MCQs

The theory of evolution proposed by Charles Darwin is often summarized as "descent with modification." What does this phrase mean?

Explanation:

Which of the following terms describes the process by which unrelated species evolve similar traits due to similar environmental pressures?

Explanation:

Which of the following statements about homologous structures is true?

Explanation:

The process of artificial selection, such as breeding dogs for specific traits, is an example of:

Explanation:

What is the term for the existence of multiple forms of a trait within a population, such as different color morphs in a species of butterfly?

Explanation:

Which of the following is a mechanism of reproductive isolation that occurs after fertilization?

Explanation:

What is the term for the formation of a new species through the gradual accumulation of small-scale genetic changes within a population?

Explanation:

The process of gene duplication followed by divergence and evolution of the duplicated gene copies is known as:

Explanation:

Which of the following mechanisms can lead to genetic variation in a population?

Explanation:

In the Hardy-Weinberg equilibrium equation, what does the term "p" represent?

Explanation:

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