Test 1 Flashcards

1
Q

What is the theory of evolution?

A

The theory of evolution explains how species change over time through processes like natural selection and genetic drift.

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2
Q

Who is known as the father of evolution?

A

Charles Darwin is known as the father of evolution.

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3
Q

What is natural selection?

A

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

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4
Q

True or False: Evolution occurs in individuals.

A

False: Evolution occurs in populations over generations.

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5
Q

Fill in the blank: The concept that all species are related through common ancestry is known as _______.

A

descent with modification.

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6
Q

What is adaptation in the context of evolution?

A

Adaptation is the process by which a species becomes better suited to its environment through changes in traits.

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7
Q

Multiple Choice: Which of the following is a mechanism of evolution? A) Mutation B) Natural Selection C) Genetic Drift D) All of the above

A

D) All of the above

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8
Q

What role do fossils play in the theory of evolution?

A

Fossils provide evidence of past life forms and show how species have changed over time.

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9
Q

True or False: Evolution is a linear process.

A

False: Evolution is not linear; it can take many paths and is influenced by various factors.

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10
Q

What is genetic drift?

A

Genetic drift is a mechanism of evolution that involves random changes in allele frequencies in a population.

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11
Q

Fill in the blank: The process by which organisms produce more offspring than can survive is called _______.

A

overproduction.

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12
Q

What is the significance of the peppered moth in studies of evolution?

A

The peppered moth demonstrates natural selection in response to environmental changes during the Industrial Revolution.

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13
Q

Explain the term ‘survival of the fittest’.

A

‘Survival of the fittest’ refers to the idea that individuals best adapted to their environment are more likely to survive and reproduce.

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14
Q

Multiple Choice: Which scientist developed the concept of ‘punctuated equilibrium’? A) Charles Darwin B) Stephen Jay Gould C) Gregor Mendel D) Richard Dawkins

A

B) Stephen Jay Gould

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15
Q

What is the difference between microevolution and macroevolution?

A

Microevolution refers to small evolutionary changes within a species, while macroevolution involves large-scale changes that can lead to the formation of new species.

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16
Q

True or False: All adaptations are beneficial.

A

False: Some adaptations may be neutral or even detrimental in certain environments.

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17
Q

What is a common misconception about evolution?

A

A common misconception is that evolution is a purposeful process; in reality, it is driven by random mutations and natural selection.

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18
Q

Fill in the blank: The study of the distribution of species and ecosystems in geographic space and through geological time is called _______.

A

biogeography.

19
Q

What evidence supports the theory of evolution?

A

Evidence includes fossil records, comparative anatomy, genetic similarities, and observed evolutionary changes.

20
Q

Multiple Choice: Which term describes the variety of life in a particular habitat or ecosystem? A) Biodiversity B) Ecosystem C) Population D) Community

A

A) Biodiversity

21
Q

What is the role of mutations in evolution?

A

Mutations introduce new genetic variations that can be acted upon by natural selection.

22
Q

Explain the concept of ‘fitness’ in evolutionary biology.

A

‘Fitness’ refers to an organism’s ability to survive and reproduce in its environment.

23
Q

True or False: Evolution can occur rapidly under certain environmental conditions.

A

True: Evolution can occur rapidly, especially in response to drastic environmental changes.

24
Q

Fill in the blank: The change in allele frequencies in a population due to chance events is known as _______.

A

genetic drift.

25
Q

What is the significance of homologous structures?

A

Homologous structures provide evidence of common ancestry among different species.

26
Q

Multiple Choice: Which of the following is NOT a type of natural selection? A) Stabilizing selection B) Directional selection C) Disruptive selection D) Random selection

A

D) Random selection

27
Q

What is the difference between artificial selection and natural selection?

A

Artificial selection is the process by which humans breed organisms for desired traits, while natural selection occurs without human intervention.

28
Q

True or False: Evolutionary theory has remained unchanged since Darwin’s time.

A

False: Evolutionary theory has evolved with new discoveries and insights in genetics and molecular biology.

29
Q

What is the importance of reproductive isolation in speciation?

A

Reproductive isolation prevents different species from interbreeding, leading to the development of new species.

30
Q

Fill in the blank: The gradual change in a species over time is called _______.

A

evolution.

31
Q

What is the role of environmental factors in evolution?

A

Environmental factors influence which traits are advantageous, shaping the direction of evolution.

32
Q

Multiple Choice: Which mechanism can lead to the formation of new species? A) Gene flow B) Genetic drift C) Natural selection D) All of the above

A

D) All of the above

33
Q

What are vestigial structures?

A

Vestigial structures are remnants of organs or structures that had a function in an early ancestor but are no longer useful.

34
Q

True or False: All living organisms share a common ancestor.

A

True: All living organisms are believed to share a common ancestor at some point in history.

35
Q

Fill in the blank: The study of the genetic makeup of populations is known as _______.

A

population genetics.

36
Q

What is adaptive radiation?

A

Adaptive radiation is the process by which a single ancestral species rapidly diversifies into a wide variety of forms to adapt to different environments.

37
Q

Multiple Choice: Which of the following is an example of a behavioral adaptation? A) A bird’s beak shape B) Migration patterns C) Camouflage D) Coloration

A

B) Migration patterns

38
Q

What does the term ‘speciation’ refer to?

A

Speciation refers to the process by which new species arise from existing species.

39
Q

True or False: Evolution is a goal-oriented process.

A

False: Evolution does not have a specific goal; it is a natural process influenced by various factors.

40
Q

Fill in the blank: The genetic variation within a population is essential for _______.

A

evolution.

41
Q

What is the significance of the Galápagos Islands in evolutionary studies?

A

The Galápagos Islands provided key insights into natural selection and adaptive radiation through the study of finches.

42
Q

Multiple Choice: Which of the following best describes convergent evolution? A) Different species evolve similar traits B) Similar species evolve different traits C) Species evolve due to genetic drift D) None of the above

A

A) Different species evolve similar traits

43
Q

What is the role of sexual selection in evolution?

A

Sexual selection drives the evolution of traits that increase an individual’s chances of attracting mates.