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Nat/Artificial Selec
Natural/artificial selection
Question | Answer |
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What is variation? | Any difference between individuals of the same species - variation describes a range of physical traits among members of a species |
What is an adaptation? | a characteristic that improves an individual's ability to survive and reproduce in a particular environment |
What is artificial selection? | the human practice of breeding animals or plants that have desired traits |
What is a mutation? | a permanent change in DNA |
What is natural selection? | the process by which the individuals that are better adapted to their environment survive and reproduce more effectively than less-well-adapted individuals do |
What is a species? | a group of organisms that are closely related and can mate to produce fertile offspring |
What is a common ancestor? | an ancestor that two or more descendants have in common |
What are derived characters? | characteristics that appear in recent parts of a lineage, but not in its older members |
What is the reason for using artificial selection? | to breed desired traits within the same species |
What is evolution? | the process by which inherited traits of a population change over many generations |
How is artificial selection different from genetic engineering? | Artificial selection does not directly change a single organism's DNA. |
How does genetic variation occur? | When individuals with different inherited characteristics reproduce |
What is insecticide resistance? | Insects with genes that have resistance to a particular insecticide survive when sprayed and are thereby “selected” to pass on this resistance to later generations. |