________ Is the Ultimate Source of Genetic Variation in Populations

question 15

Multiple Choice

________ is the ultimate source of genetic variation in populations.

• A) Natural selection
• B) Gene flow
• C) Recombination
• D) Mutation
• E) Genetic drift

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Definitions:

Water Table

The water table is the upper level of an underground surface in which the soil or rocks are permanently saturated with water, delineating the boundary between the aquifer's unsaturated zone and saturated zone.

Topography

The arrangement of the natural and artificial physical features of an area, including its relief and the position of its features.

Artesian Well

A well tapping a confined aquifer, where the water pressure is sufficient to bring the water to the surface without pumping.

Water Table

The level below which the ground is completely saturated with water, marking the boundary between the unsaturated soil and the groundwater.