Most Cells of an Animal

question 48

Multiple Choice

Most cells of an animal

• A) are exposed to the external environment.
• B) are exposed to the internal environment.
• C) fluctuate between exposure to the external environment and the internal environment.
• D) turn over while being exposed to the internal environment.

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Definitions:

Hardy-Weinberg Equilibrium

A principle stating that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.

Alleles

Different versions of the same gene, which can result in variations in the phenotype or physical expression of a genetic trait.

Evolutionary Change

A process through which organisms develop and diversify from earlier forms throughout the history of the earth.

Adaptation

Species’ modification in structure, function, or behavior that makes a species more suitable to its environment.