Examlex
Many people in the U.S.with the highest incomes would still be considered middle-class.
Mutation
A permanent alteration in the DNA sequence that makes up a gene, leading to variability within populations and potentially to new traits or diseases.
Adaptive Evolution
The method by which populations adapt to their surroundings by evolving genetic characteristics across generations.
Environmental Change
Any alteration in the conditions of an environment, due to natural processes or human activities, that can affect the organisms living within it.
Hardy-Weinberg Equilibrium
A rule that indicates the frequencies of alleles and genotypes in a population will stay unchanged over generations if there are no other factors driving evolution.
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