Questions and Answers
What are some of the limitations of artificial selection in crop breeding, and what consequences can arise if breeding is not balanced?
Limitations of artificial selection include tolerance to poor soil conditions and size constraints. Consequences of unbalanced breeding include crops that may not tolerate poor soil conditions and species that cannot support their own weight.
What is an example of a trait that has been selectively bred in an organism, but resulted in negative consequences?
The English bulldog's flat face, which has led to severe respiratory problems.
What is a primary goal of domestication, and what is a potential consequence of achieving this goal?
A primary goal of domestication is to produce organisms that are all similar, which can lead to decreased genetic diversity.
What is one way that artificial selection has been used to improve domesticated organisms, and what benefit does this bring?
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Why is it important for crop breeders to balance selective breeding with considerations of environmental adaptability?
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Study Notes
Artificial Selection in Food Crops
- Artificial selection is used to improve food crops, increasing nutritional value, harvest yield, drought resistance, and pest resistance.
- However, artificial selection has limitations, and breeders must strike a balance to avoid negative consequences.
Limitations of Artificial Selection
- Rapid breeding can lead to plants that are sensitive to poor soil conditions.
- Selective breeding for specific traits can result in physical limitations, such as size and weight.
Examples of Artificial Selection
- The English bulldog was bred for a flat face, but this trait causes severe respiratory problems.
Goals of Domestication
- One of the main goals of domestication is to produce organisms that are genetically similar, resulting in decreased genetic diversity.
- Artificial selection techniques can introduce new genetic information into domesticated organisms.
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Description
Learn about the benefits and limitations of using artificial selection to improve food crops, including increased nutritional value and harvest yield, and potential drawbacks like sensitivity to poor soil conditions.
