Examlex
The microscopic feature that accounts for the white clinical appearance of lichen planus is:
Adaptive Variation
Differences among individuals in a population that result from genetic changes and environmental factors, enabling better survival and reproduction.
Genetic Polymorphism
The presence in a population of two or more alleles for a given gene locus.
Natural Selection
A fundamental mechanism of evolution where organisms better adapted to their environment tend to survive and reproduce more than others.
Evolution
The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth, driven by natural selection, genetic drift, mutations, and gene flow.
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