Sharks are osmoconformers, but have a rectal gland that is similar in function to the salt gland of sea birds and sea turtles. This is an adaptation to which of the following problems?
A. loss of ions
B. gain of ions
C. loss of water
D. gain of water
B. gain of ions
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What event causes the cervical curve to begin development?
A) walking begins B) intrauterine events C) an infant begins to lift his or her head D) the birth process E) None of the answers are correct.
. An example of a biofilm is ____
a. oral bacteria living on teeth b. a bacterial capsule c. elongated pili d. an oil slick e. microalgae on a pond surface
What type of test would you use to determine whether observed data constitute evidence of genetic linkage or are simply a case of chance variation from expected values?
A) test cross B) two-point test cross C) three-point test cross D) chi-square analysis E) recombination frequency (r) calculation
Assume that a given plasmid vector to be used in a cloning experiment contains 4000 base pairs of DNA
Assume also that the restriction endonuclease Cuj cuts this plasmid at the following sites (starting from an arbitrary zero point): 1000, 1500, and 3000. Given complete digestion of the plasmid with the endonuclease so that only linear fragments are produced, what sizes of DNA are expected?