Which of the following was NOT one of Darwin’s
observations?
a. Most individuals have an equal chance to
survive and reproduce.
b. Changes in populations are gradual and take
place over long periods of time.
c. Members of the same species may exhibit
considerable variation.
d. Some characteristics are heritable and passed on
to offspring.
e. Some characteristics afford their possessor a
better chance of survival.
Answer: a
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Sperm
(a) are male gametes. (b) are female gametes. (c) contain yolk. (d) are produced in the ovaries.
The ________ was developed in the late 1920s by Theodore Svedberg. He originally used it to determine the sedimentation rate of proteins.
Fill in the blank(s) with the appropriate word(s).
__________ shifts the range of variation in traits in
one direction. Fill in the blank(s) with the appropriate word(s).
What second messenger is directly involved in activating protein kinase C (PKC)?
A. G protein B. Phospholipase C C. cGMP D. DAG E. cAMP