May 31, 2016

Homework Help: Science

Posted by Anonymous on Friday, November 15, 2013 at 12:45am.

Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolutionary change might happen fast sometimes?

a. homologous structures
b. fossils
c. reproduction rates
d. DNA sequences

Which of the following provides evidence for the hypothesis of punctuated equilibrium?

a. the discovery of many fossils of different forms corresponding to a line of ancestors for a species.

b. the discovery of a common sequence in DNA in several different species.

c. the discovery of a vestigial structure in an organism.

d. the discovery of an abrupt change in DNA in a species after many generations of no change.

My answers: C, D

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