How Long Did It Take the Human Population to Double

question 173

Multiple Choice

How long did it take the human population to double from 500 million to 1 billion?

• A) 150 years
• B) 300 years
• C) 450 years
• D) 600 years

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Definitions:

Hardy-Weinberg Equilibrium

Mathematical law stating that the gene frequencies in a population remain stable if evolution does not occur due to nonrandom mating, selection, migration, and genetic drift.

Nonrandom Mating

Mating among individuals on the basis of their phenotypic similarities or differences, rather than mating on a random basis.

Gene Flow

Sharing of genes between two populations through interbreeding.

Genetic Drift

A mechanism of evolution that results in change in the genetic makeup of a population by chance or random events rather than by natural selection.