Question

Directional selection can be distinguished from disruptive selection by _______.
a.
the elimination of extreme variations of traits
b.
selection for two extreme variations of a trait
c.
the preservation of gene frequencies
d.
selection for one extreme variation of a trait

With regards to a “Data (Age) Structure Diagram”, which of the following is an indicator of a rapidly growing population?

a.
a large elderly population
b.
a large middle age population
c.
a large teenage population
d.
a large child population