Examlex
Motivation theorists refer to positive goals we seek to obtain as __________.
Gametic Incompatibility
Occurs when sperm or pollen from one species fails to penetrate and fertilize the egg or ovule of another species.
Reproductive Isolation
A collection of mechanisms, behaviors, and physiological processes that prevent the members of two different species from producing offspring, or ensure any offspring are sterile.
Hummingbirds
A family of small, brightly colored birds known for their rapid wingbeat, ability to hover, and preference for feeding on nectar.
Phylogenetic Species Concept
A method for classifying organisms based on the smallest group of individuals that share a common ancestor, emphasizing the evolutionary history of populations.
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