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Nat/Artificial Selec

Natural/artificial selection

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.
Created by: Mrs. Corey