In establishing paternity by DNA fingerprinting, what proportion of microsatellite repeat alleles in a child come from the father?
A) only those on the X chromosome
B) 1/4
C) 1/2
D) 3/4
Answer: C
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In the process of quorum sensing, bacteria release signaling molecules in ____ concentrations as cell density ____
a. increasing; decreases b. increasing; increases c. decreasing; increases d. decreasing; decreases e. constant; increases
Organic molecules found in plant foods that reduce the risk of certain disorders are known as ____
a. vitamins b. essential amino acids c. minerals d. phytochemicals e. lipids
The actual niche the organism is able to occupy in the presence of competitors is called its
A. fundamental niche. B. realized niche. C. interference niche. D. intraspecific niche. E. exploitative niche.
The comparative anatomist Georges Cuvier confirmed the concept of extinction in 1812 when he demonstrated that there were no extant species anatomically related to the fossilized remains of the ________
A) mastodon B) Irish elk C) pygmy armadillo D) giant vampire bat E) Arctic lemming