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Unit 4 Quiz

Review terms for upcoming quiz.

TermDefinition
Natural Selection A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
Evolution Change over time
Speciation Evolution of a new species from an existing one
Charles Darwin scientist who formulated a theory of evolution by natural selection
Artificial Selection Selection by humans for breeding of useful traits from the natural variation among different organisms
Competition the effort of two or more organisms acting independently to get resources that are in short supply.
Overproduction species produce more offspring than possibly can survive.
genetic variation Differences among individuals in the composition of their genes or other DNA segments
Struggle to Survive Shortage of food, water, and habitat, presence of predators and disease means only some will survive to adulthood.
Species A group of similar organisms that can mate with each other and produce fertile offspring.
Variation Any difference between individuals of the same species.
Natural selection The process by which organisms that adapt to their environments are able to survive
Which of the following is necessary for natural selection? There must be some genetic differences among the individuals of a species.
One benefit of variation within a species is... It ensures some organisms can survive an environmental change.
descent with modification The observable fact that when parents have children those children look slightly different and slightly different form their siblings
Created by: lsabs
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