Examlex
Compare the goals of researchers who use the observational method, the correlational method, and the experimental method. Provide an example of a question that is best addressed by each method.
Sympatric Speciation
Speciation pattern in which speciation occurs within a population, in the absence of a physical barrier to gene flow.
Physical Barrier
Any natural or artificial structure that blocks or limits movement, spread, or access of organisms or materials.
Polyploidy
The condition of having more than two complete sets of chromosomes in an organism, common in plants and some animal species.
Sexual Dimorphism
The noticeable difference in appearance between males and females of the same species, beyond just the reproductive organs.
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