Which is among the reasons that about half of Americans believe that evolution does not occur?
a. the mechanisms of evolution are simple and easily explained
b. the mechanisms of evolution are complex and do not lend themselves to simple explanations
c. most people possess extensive familiarity with the principles of genetics
d. most have not read and studied On the Tendency of Varieties to Depart Indefinitely From the Original Type, by Alfred Russel Wallace
e. many people do not want clear-cut answers
Question 2
When it came to explaining the origins of variation within species, Darwin
a. used Mendel's theory of heredity
b. agreed with Lamarck that it was caused by an animal's inner needs
c. argued it was caused by differential use of an animal's body parts
d. had no idea of the true causes
e. used his research gathered while at Cambridge
Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
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Human and great ape chromosome evolution