Podcast
Questions and Answers
What is the primary reason domesticating animals is essential?
What is the primary reason domesticating animals is essential?
- To increase biodiversity in ecosystems.
- To ensure food security for humans. (correct)
- To improve the aesthetic value of landscapes.
- To provide animals with better living conditions.
Evolution always results in the development of more complex organisms.
Evolution always results in the development of more complex organisms.
False (B)
Define what is meant by the term 'population' in a biological context.
Define what is meant by the term 'population' in a biological context.
A group of individuals of the same species living and interbreeding within a specific area.
The process where the transformation of species happens through time is known as ______.
The process where the transformation of species happens through time is known as ______.
How do genetic changes primarily affect populations over time?
How do genetic changes primarily affect populations over time?
Natural selection is a random process that does not favor any specific traits.
Natural selection is a random process that does not favor any specific traits.
Name two types of selection that can produce change in populations from generation to generation.
Name two types of selection that can produce change in populations from generation to generation.
The finches with different beak shapes and sizes is a classic example of the outcome of ______ selection.
The finches with different beak shapes and sizes is a classic example of the outcome of ______ selection.
What is the role of heritable traits in natural selection?
What is the role of heritable traits in natural selection?
Artificial selection occurs without human intervention.
Artificial selection occurs without human intervention.
Briefly describe what is meant by the term 'selective breeding'.
Briefly describe what is meant by the term 'selective breeding'.
The process of selectively breeding plants and animals has an increase in achieving ______ traits that leads to higher production.
The process of selectively breeding plants and animals has an increase in achieving ______ traits that leads to higher production.
Which outcome is most closely associated with artificial selection?
Which outcome is most closely associated with artificial selection?
Selective breeding always leads to healthier and more resilient populations.
Selective breeding always leads to healthier and more resilient populations.
How does the concept of 'fitness' apply to the process of natural selection?
How does the concept of 'fitness' apply to the process of natural selection?
The changes through natural selection leads to higher chance of ______ of the species in the community.
The changes through natural selection leads to higher chance of ______ of the species in the community.
Match each term with its correct description:
Match each term with its correct description:
What is a key difference between natural and artificial selection?
What is a key difference between natural and artificial selection?
Adaptation is the final stage in natural selection, after overproduction, variation, and selection.
Adaptation is the final stage in natural selection, after overproduction, variation, and selection.
What are the steps in natural selection?
What are the steps in natural selection?
What is a key difference between artificial selection and selective breeding?
What is a key difference between artificial selection and selective breeding?
Selective breeding serves as the primary principle behind artificial selection.
Selective breeding serves as the primary principle behind artificial selection.
Name two advantages of selective breeding.
Name two advantages of selective breeding.
Changes through a process of selectively breeding plants and animals leads to
Changes through a process of selectively breeding plants and animals leads to
Population refers to the group of all individuals belonging to a species that live in a particular area and interbreed with one another to form an offspring.
Population refers to the group of all individuals belonging to a species that live in a particular area and interbreed with one another to form an offspring.
Which is an example of artificial selection?
Which is an example of artificial selection?
Define artificial selection
Define artificial selection
Natural Selection is the process where organisms with ______ traits survive and reproduce at a higher rate.
Natural Selection is the process where organisms with ______ traits survive and reproduce at a higher rate.
Which process leads to an increase of desirable traits and leads to higher production in animal derived products?
Which process leads to an increase of desirable traits and leads to higher production in animal derived products?
Artificial selection can occur without any human intervention.
Artificial selection can occur without any human intervention.
How does genetics affect evolution?
How does genetics affect evolution?
According to the figure, two descendants of the founder species are the ______ and the Nihos Finch.
According to the figure, two descendants of the founder species are the ______ and the Nihos Finch.
What is natural selection?
What is natural selection?
Selective breeding cannot lead to animal domestication.
Selective breeding cannot lead to animal domestication.
Why are the finches one of the best examples of the outcome of natural selection?
Why are the finches one of the best examples of the outcome of natural selection?
Flashcards
What is a population?
What is a population?
A group of individuals that belong to the same species, living in a specific area, and interbreeding.
What is evolution?
What is evolution?
The process by which species transform over time, through changes in morphology or genetics.
What causes evolution?
What causes evolution?
Genetic changes in a population that are passed from parents to offspring across generations.
What is Natural Selection?
What is Natural Selection?
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How does natural selection work?
How does natural selection work?
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What is the importance of selected traits?
What is the importance of selected traits?
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What is Artificial Selection?
What is Artificial Selection?
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What is the importance of artificial selection?
What is the importance of artificial selection?
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What increases through selective breeding?
What increases through selective breeding?
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Study Notes
Artificial and Natural Selection
- Domesticating animals ensures food security as humans rely on livestock as a food source.
- Farming animals and plants impacts the structure of their populations.
- Mechanisms such as artificial selection, natural selection, genetic drift, mutation, and recombination cause populations to change from generation to generation.
Population
- A population comprises a group of individuals of the same species.
- Members of a population live in the same area and interbreed to produce offspring.
Concept of Evolution
- Evolution is the process where species transform over time.
- The founder species diverged into two lineages.
- Amakihi and Nihoa finch are descendants and products of speciation.
- Genetic changes are passed to successive generations over time.
Natural Selection
- Natural selection enables organisms with favorable traits to have greater fitness and reproductive success,
- Natural selection is exemplified by finches with varying beak shapes and sizes which match the food available in their habitat.
- Selected traits that allow organisms to capture food efficiently or evade predators effectively result in a higher chance of survival for species.
- Natural selection involves overproduction, variation and adaptation.
Artificial Selection
- Artificial selection involves selecting plants or animals for breeding, stemming from understanding of heritable traits.
- Artificial selection is used in selective breeding to make new varieties of plants and animals.
- Selective breeding increases the chances of getting desirable traits, and higher production in plants and animal derived products.
- Selective breeding examples:
- Cabbage
- Cauliflower
- Broccoli
- Kohlrabi
- Kale
- Pig evolution resulted from series of domestication and breeding.
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