For Two Populations to Accumulate Enough Genetic Differences to Cause

question 48

Multiple Choice

For two populations to accumulate enough genetic differences to cause speciation, the factors that promote these differences

• A)must operate in populations that are not physically separated.
• B)must have a greater effect than does the amount of ongoing gene flow.
• C)need to be combined with the forces of genetic drift.
• D)should include polyploidy.

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Definitions:

Ages of Jockeys

The distribution and statistical analysis of the chronological ages within a group of professional riders in horse racing competitions.

Class Intervals

The range of values into which data are grouped for frequency distribution tables or histograms.

Second Quartile

The median of a data set, dividing the data into two equal parts where half the numbers are above it and half are below.

Hours

Units of time, each equal to 60 minutes, commonly used to measure duration or the length of time events occur.