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Mod. D Unit 2 Les 3
Module D Unit 2 Lesson 3 Speciation and Extinction
Term | Definition |
---|---|
Species | is a group of individuals that can reproduce successfully in nature. |
Speciation | occurs when two or more populations no longer successfully reproduce. It requires a barrier to reproduction, which stops the flow of genes between populations. |
Reproductively Isolated | when populations are unable to reproduce with each other, geographic barriers is an example of how this may occur. |
Minimum Viable Population | is the smallest number of individuals needed for a population to survive for more than 40 generations given current environmental conditions. |
Genome | an organism's complete set of DNA, including all of its genes. |
Ecosystem | a community of living organisms in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system. |