Biological Traits Generally Follow a Geographic Continuum,also Called a Cline

question 1

Multiple Choice

Biological traits generally follow a geographic continuum,also called a cline.How does this relate to the concept of race?

• A)Most traits are not bounded by supposed "racial" boundaries but rather vary between two points,such as the frequency of type-B blood changing gradually from eastern Asia to far-western Europe.
• B)The cline is the scale against which variation is measured,from which we can derive the number of distinct races in a region.
• C)The term clinal variation is another term for race or subspecies.
• D)Most genetic traits sort people into a fixed number of race categories.Clines do not sort people this way but are very rare.

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