Accurate Radiometric Dating Is Possible Only If a Rock Contains

question 2

Multiple Choice

Accurate radiometric dating is possible only if a rock contains a measurable amount of ________.

• A)parent isotope atoms
• B)daughter isotope atoms
• C)either parent or daughter atoms
• D)both parent and daughter atoms

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Definitions:

Microevolution

The process of evolution over a short period that results in changes in gene frequency within a population, leading to slight adaptations or shifts.

Allele Frequencies

The proportion of all copies of a given gene variant (allele) present in a particular population.

Generations

Sequential stages in the familial lineage, where an individual's successors are considered a new generation.

Disruptive Selection

A special type of directional selection in which changes in the environment favor two or more variant phenotypes at the expense of the mean. Compare with stabilizing selection and directional selection.