Which of the following best describes microevolution?
A. genetic changes in a population without speciation
B. the divergence of one ancestral species into two
C. the formation of a new species
D. the exchange of genetic material through interbreeding
E. long periods of stability with occasional evolutionary leaps
Question 2
In the debate of how speciation occurs, advocates of punctuated equilibrium
A. describe macroevolution as the gradual accumulation of evolutionary changes over time.
B. agree with the advocates of intelligent design on views about the flaws in fossil-dating techniques.
C. define species the same way creationists and gradualists do.
D. have revived Darwin's classic description of change over time.
E. suggest that long periods of stability, during which species change little, are interrupted by evolutionary leaps.
Exponential population growth.
Some organisms used as models in genetic research
Genetic differences between humans, Neadertals, and chimps.
Human population growth, 1700 - present
Population age 65 and over and age 85 and over, selected years 1900-2008 and projected 2010-2050.
Models for Genetic Analysis of Behavior