Explain, convergent and divergent evolution Flashcards

1
Q

What is convergent evolution?

A

Convergent evolution is the process where unrelated or distantly related organisms evolve similar traits or adaptations in response to similar environmental challenges.

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2
Q

What is divergent evolution?

A

Divergent evolution is the process by which two or more related species become more dissimilar over time, often due to different environmental pressures.

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3
Q

True or False: Convergent evolution results in similar traits in unrelated species.

A

True

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4
Q

Which of the following is an example of convergent evolution? A) Dolphins and sharks B) Wolves and domestic dogs C) Humans and chimpanzees

A

A) Dolphins and sharks

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5
Q

Fill in the blank: Divergent evolution often leads to __________ among species.

A

speciation

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6
Q

What role does natural selection play in convergent evolution?

A

Natural selection drives convergent evolution by favoring similar adaptations in organisms facing similar environmental challenges.

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7
Q

Name a key factor that can lead to divergent evolution.

A

Different environmental pressures or niches.

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8
Q

True or False: Convergent evolution can occur in both plants and animals.

A

True

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9
Q

What is a common outcome of divergent evolution?

A

The development of new species from a common ancestor.

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10
Q

Which of the following is a classic example of divergent evolution? A) The evolution of wings in bats and birds B) The evolution of different beak shapes in Darwin’s finches C) The camouflage of stick insects

A

B) The evolution of different beak shapes in Darwin’s finches

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11
Q

Fill in the blank: The process of __________ evolution can lead to homologous structures.

A

divergent

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12
Q

What are homologous structures?

A

Homologous structures are anatomical features in different species that share a common ancestry but may serve different functions.

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13
Q

True or False: Analogous structures are a result of divergent evolution.

A

False

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14
Q

What are analogous structures?

A

Analogous structures are features in different species that have similar functions but do not share a common ancestry, resulting from convergent evolution.

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15
Q

Which concept describes the idea that similar environmental pressures can lead to similar adaptations in unrelated species?

A

Convergent evolution

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16
Q

Name one mechanism that can drive divergent evolution.

A

Geographic isolation

17
Q

True or False: Both convergent and divergent evolution can occur simultaneously in different lineages.

A

True

18
Q

What is adaptive radiation?

A

Adaptive radiation is a form of divergent evolution where a single ancestor species rapidly diversifies into a wide variety of forms to adapt to different environments.

19
Q

Fill in the blank: The __________ effect can lead to divergent evolution by isolating populations.

A

founder

20
Q

What is an example of convergent evolution in plants?

A

The development of similar drought-resistant traits in cacti and euphorbias.

21
Q

True or False: Divergent evolution can result in the extinction of some species.

A

True

22
Q

What is the main difference between convergent and divergent evolution?

A

Convergent evolution leads to similar traits in unrelated species, while divergent evolution leads to differences in related species.

23
Q

Which term describes the evolutionary process where species that are closely related become more different over time?

A

Divergent evolution

24
Q

Fill in the blank: Convergent evolution often results in __________ structures.

A

analogous

25
Q

What is the significance of studying convergent and divergent evolution?

A

It helps us understand how species adapt to their environments and the evolutionary processes that shape biodiversity.