CH 9: Artificial Selection

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What is the main difference between artificial selection and natural selection?

Artificial selection happens in the wild, while natural selection is controlled by humans.

Artificial selection is based on human choice, while natural selection is based on environmental pressures. (correct)

Artificial selection is random, while natural selection is goal-oriented.

Artificial selection leads to reduced genetic diversity, while natural selection does not.

Which process has led to the creation of numerous dog breeds tailored to human preferences?

Adaptation

Natural selection

Artificial selection (correct)

Genetic mutation

What has the intense selective breeding of certain dog breeds resulted in?

No impact on genetic diversity or health

Enhanced adaptability to changing environments

Reduced genetic diversity and increased susceptibility to health problems (correct)

Increased genetic diversity and improved health

Which of the following best describes the purpose of artificial selection?

To enhance specific desirable traits in animals or plants Signup and view all the answers

What can happen when artificial selection focuses heavily on purebred populations?

Increased risk of genetic disorders and diseases Signup and view all the answers

How have crop species been affected by artificial selection?

Dramatically transformed Signup and view all the answers

Why are certain dog breeds susceptible to genetic disorders due to artificial selection?

Reduced genetic diversity within purebred populations Signup and view all the answers

What is one of the benefits of artificial selection in crops mentioned in the text?

Increased yields Signup and view all the answers

Why did early farmers select plants with desirable traits in maize?

To have seeds that remained on the cob Signup and view all the answers

What potential drawback of artificial selection is highlighted in the text?

Loss of genetic diversity in crops Signup and view all the answers

Which of the following is NOT a consequence of focusing on specific traits in animals through artificial selection?

Increase in genetic diversity Signup and view all the answers

Why can the reliance on a narrow range of crop varieties be problematic?

It reduces biodiversity Signup and view all the answers

What is emphasized as a key responsibility associated with artificial selection?

Managing genetic diversity carefully Signup and view all the answers

What does artificial selection demonstrate about human capability according to the text?

Ability to shape the environment and meet needs Signup and view all the answers

Why is understanding and maintaining genetic diversity important according to the text?

It is crucial for ecological balance and agricultural sustainability. Signup and view all the answers

What is one drawback of artificial selection in crop species mentioned in the text?

Vulnerability to diseases and pests due to loss of genetic diversity Signup and view all the answers

Which trait was NOT specifically mentioned as being selected for by early farmers in maize?

Seeds that fell off the cob easily Signup and view all the answers

Why might a focus on particular traits in animals through artificial selection lead to unforeseen consequences?

As a result of neglecting other essential traits like disease resistance Signup and view all the answers

What problem can arise from the reliance on a narrow range of crop varieties?

Higher susceptibility to threats and reduced biodiversity Signup and view all the answers

Which statement best describes the consequence of years of breeding for specific traits in crop species?

Loss of genetic diversity leading to vulnerability to diseases and pests Signup and view all the answers

In what way does artificial selection in crops differ from natural selection?

Natural selection is random, whereas artificial selection is purposeful and directed. Signup and view all the answers

What role does genetic diversity play in maintaining ecological balance according to the text?

It helps crops resist diseases and pests. Signup and view all the answers

Why do some crop species become more vulnerable to diseases and pests as a result of artificial selection?

'Desirable traits' may lead to a loss of genetic diversity. Signup and view all the answers

'Years of breeding for specific traits such as size and yield' primarily refer to what kind of process according to the text?

'Artificial selection' Signup and view all the answers

What is the main difference between artificial selection and natural selection?

In natural selection, environmental pressures dictate evolutionary changes, while in artificial selection, humans choose which traits are desirable. Signup and view all the answers

What is a potential consequence of intense selective breeding within purebred dog populations?

Greater susceptibility to genetic disorders Signup and view all the answers

Why do humans actively choose which animals or plants reproduce in artificial selection?

To perpetuate specific desirable traits Signup and view all the answers

What has artificial selection in crop species had a profound impact on?

Agriculture and food production Signup and view all the answers

Which statement best describes the impact of artificial selection on genetic diversity in certain dog breeds?

Genetic diversity decreases, leading to susceptibility to genetic disorders. Signup and view all the answers

What role do humans play in deciding which characteristics are advantageous in artificial selection?

Active role in choosing desirable traits Signup and view all the answers

Why do certain dog breeds face health problems due to artificial selection?

As a result of reduced genetic diversity from intense selective breeding Signup and view all the answers

How does artificial selection differ from natural selection in terms of decision-making?

Humans decide advantageous traits in artificial selection, but in natural selection, it is determined by chance. Signup and view all the answers

What is a potential risk associated with artificial selection mentioned in the text?

Higher susceptibility to diseases and pests in crops Signup and view all the answers

How does the neglect of certain traits in animals impact them as highlighted in the text?

Results in unforeseen consequences Signup and view all the answers

What is an outcome of intense selective breeding within purebred dog populations according to the text?

Higher susceptibility to genetic disorders Signup and view all the answers

How can focusing on specific traits in animals through artificial selection lead to unforeseen consequences?

By neglecting other important traits Signup and view all the answers

Why does the reliance on a narrow range of crop varieties pose a problem according to the text?

It makes food supplies more susceptible to threats Signup and view all the answers

What is one of the main benefits of artificial selection in crops as mentioned in the text?

More nutritious and easier-to-harvest crops Signup and view all the answers

How has selective breeding impacted the genetic diversity of some crop species?

Reduced it, making crops more vulnerable Signup and view all the answers

What is an example of a consequence of years of breeding for specific traits in animal species?

Neglecting crucial traits like disease resistance Signup and view all the answers

How does artificial selection differ from natural selection in terms of genetic diversity?

Natural selection reduces genetic diversity, while artificial selection can reduce or maintain it Signup and view all the answers

What is a potential risk associated with intense selective breeding within purebred dog populations?

Higher susceptibility to health issues Signup and view all the answers

What is the primary difference between artificial and natural selection?

Artificial selection relies on human intervention, while natural selection is driven by environmental pressures. Signup and view all the answers

In what way has artificial selection impacted genetic diversity in certain dog breeds?

Decreased genetic diversity making some breeds prone to genetic disorders. Signup and view all the answers

Why do some purebred dog populations face health issues as a consequence of artificial selection?

As a result of reduced genetic diversity causing vulnerability to health problems. Signup and view all the answers

What impact does artificial selection have on crop species' susceptibility to diseases and pests?

It makes them more prone to diseases and pests due to reduced genetic diversity. Signup and view all the answers

What role do humans play in the process of artificial selection?

Actively choosing which animals or plants reproduce based on desirable traits. Signup and view all the answers

How does intense selective breeding impact the genetic makeup of certain dog breeds?

It decreases genetic diversity, making breeds more susceptible to genetic disorders. Signup and view all the answers

What potential issue arises when artificial selection focuses heavily on purebred populations?

Greater susceptibility to genetic disorders and health issues. Signup and view all the answers

What is the consequence of reduced genetic diversity in certain dog breeds due to intense selective breeding?

Higher probability of encountering genetic disorders or health problems. Signup and view all the answers

Why are some crop species more vulnerable to diseases and pests as a result of artificial selection?

Because of decreased genetic diversity resulting from selective breeding practices. Signup and view all the answers

What distinguishes artificial selection from natural selection?

Humans decide advantageous characteristics. Signup and view all the answers

Which statement describes a consequence of intense selective breeding within purebred dog populations?

Greater susceptibility to health problems Signup and view all the answers

What is one of the impacts of artificial selection on crop species?

Increased vulnerability to diseases Signup and view all the answers

How has artificial selection influenced the creation of various dog breeds?

Enhanced diversity in physical attributes Signup and view all the answers

Which factor contributes to certain dog breeds facing health issues?

Breeding for specific traits Signup and view all the answers

In what way has artificial selection impacted the genetic diversity of dogs?

Led to reduced genetic diversity in certain breeds Signup and view all the answers

What is a potential drawback of intense selective breeding within dog populations?

Higher risk of genetic disorders Signup and view all the answers

Why are certain dog breeds susceptible to genetic disorders according to the text?

Because of reduced genetic diversity Signup and view all the answers

What is one way artificial selection differs from natural selection according to the text?

Humans determine advantageous traits in artificial selection. Signup and view all the answers

What is a potential consequence of reduced genetic diversity in crop species due to artificial selection?

Higher vulnerability to diseases and pests Signup and view all the answers

Why is it important to understand and maintain genetic diversity in agricultural settings?

To ensure resilience against threats and maintain biodiversity Signup and view all the answers

In the context of artificial selection, what is a potential risk associated with focusing on specific traits in animal populations?

Neglecting other important traits Signup and view all the answers

How does relying on a narrow range of crop varieties exacerbate problems in agriculture?

By reducing biodiversity and making food supplies more vulnerable Signup and view all the answers

What is one of the drawbacks associated with intense selective breeding in purebred dog populations?

Reduced overall health Signup and view all the answers

How has artificial selection shaped maize into the staple crop known today?

By selecting for larger ears, fewer stems, and seeds on the cob Signup and view all the answers

'Years of breeding for specific traits such as size and yield' primarily refer to which process according to the text?

Artificial selection in crop species Signup and view all the answers

What role does genetic diversity play in shaping the domesticated world around us according to the text?

It assists in maintaining ecological balance and resilience. Signup and view all the answers

What is emphasized as a key responsibility associated with managing artificial selection's potential risks?

Managing genetic diversity and potential risks carefully Signup and view all the answers

What is a potential benefit of artificial selection in relation to shaping crops for human consumption according to the text?

Cultivation of crops that are more nutritious and easier to harvest Signup and view all the answers

CH 9: Artificial Selection

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Questions and Answers

What is the main difference between artificial selection and natural selection?

Which process has led to the creation of numerous dog breeds tailored to human preferences?

What has the intense selective breeding of certain dog breeds resulted in?

Which of the following best describes the purpose of artificial selection?

What can happen when artificial selection focuses heavily on purebred populations?

How have crop species been affected by artificial selection?

Why are certain dog breeds susceptible to genetic disorders due to artificial selection?

What is one of the benefits of artificial selection in crops mentioned in the text?

Why did early farmers select plants with desirable traits in maize?

What potential drawback of artificial selection is highlighted in the text?

Which of the following is NOT a consequence of focusing on specific traits in animals through artificial selection?

Why can the reliance on a narrow range of crop varieties be problematic?

What is emphasized as a key responsibility associated with artificial selection?

What does artificial selection demonstrate about human capability according to the text?

Why is understanding and maintaining genetic diversity important according to the text?

What is one drawback of artificial selection in crop species mentioned in the text?

Which trait was NOT specifically mentioned as being selected for by early farmers in maize?

Why might a focus on particular traits in animals through artificial selection lead to unforeseen consequences?

What problem can arise from the reliance on a narrow range of crop varieties?

Which statement best describes the consequence of years of breeding for specific traits in crop species?

In what way does artificial selection in crops differ from natural selection?

What role does genetic diversity play in maintaining ecological balance according to the text?

Why do some crop species become more vulnerable to diseases and pests as a result of artificial selection?

'Years of breeding for specific traits such as size and yield' primarily refer to what kind of process according to the text?

What is the main difference between artificial selection and natural selection?

What is a potential consequence of intense selective breeding within purebred dog populations?

Why do humans actively choose which animals or plants reproduce in artificial selection?

What has artificial selection in crop species had a profound impact on?

Which statement best describes the impact of artificial selection on genetic diversity in certain dog breeds?

What role do humans play in deciding which characteristics are advantageous in artificial selection?

Why do certain dog breeds face health problems due to artificial selection?

How does artificial selection differ from natural selection in terms of decision-making?

What is a potential risk associated with artificial selection mentioned in the text?

How does the neglect of certain traits in animals impact them as highlighted in the text?

What is an outcome of intense selective breeding within purebred dog populations according to the text?

How can focusing on specific traits in animals through artificial selection lead to unforeseen consequences?

Why does the reliance on a narrow range of crop varieties pose a problem according to the text?

What is one of the main benefits of artificial selection in crops as mentioned in the text?

How has selective breeding impacted the genetic diversity of some crop species?

What is an example of a consequence of years of breeding for specific traits in animal species?

How does artificial selection differ from natural selection in terms of genetic diversity?

What is a potential risk associated with intense selective breeding within purebred dog populations?

What is the primary difference between artificial and natural selection?

In what way has artificial selection impacted genetic diversity in certain dog breeds?

Why do some purebred dog populations face health issues as a consequence of artificial selection?

What impact does artificial selection have on crop species' susceptibility to diseases and pests?

What role do humans play in the process of artificial selection?

How does intense selective breeding impact the genetic makeup of certain dog breeds?

What potential issue arises when artificial selection focuses heavily on purebred populations?

What is the consequence of reduced genetic diversity in certain dog breeds due to intense selective breeding?

Why are some crop species more vulnerable to diseases and pests as a result of artificial selection?

What distinguishes artificial selection from natural selection?

Which statement describes a consequence of intense selective breeding within purebred dog populations?

What is one of the impacts of artificial selection on crop species?

How has artificial selection influenced the creation of various dog breeds?

Which factor contributes to certain dog breeds facing health issues?

In what way has artificial selection impacted the genetic diversity of dogs?

What is a potential drawback of intense selective breeding within dog populations?

Why are certain dog breeds susceptible to genetic disorders according to the text?

What is one way artificial selection differs from natural selection according to the text?

What is a potential consequence of reduced genetic diversity in crop species due to artificial selection?

Why is it important to understand and maintain genetic diversity in agricultural settings?

In the context of artificial selection, what is a potential risk associated with focusing on specific traits in animal populations?

How does relying on a narrow range of crop varieties exacerbate problems in agriculture?

What is one of the drawbacks associated with intense selective breeding in purebred dog populations?

How has artificial selection shaped maize into the staple crop known today?

'Years of breeding for specific traits such as size and yield' primarily refer to which process according to the text?

What role does genetic diversity play in shaping the domesticated world around us according to the text?

What is emphasized as a key responsibility associated with managing artificial selection's potential risks?

What is a potential benefit of artificial selection in relation to shaping crops for human consumption according to the text?

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