Suppose that a mistake made during DNA replication in a cell is not corrected, but instead the mutation remains in the single strand where it occurred. Then suppose that after the cell divides, both daughter cells survive, and those cells then go on to have DNA replication, and ultimately cell division. Four cells now exist where there once was one cell. Assume that the mistake was never corrected and that no other mistakes occurred. How many of the four cells will have the mutation in their DNA?
a. three
b. two
c. one
d. none
Ans: c. one
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Distinguish between a homosporous and a heterosporous type of life cycle.
What will be an ideal response?
____ is an adrenal hormone that makes kidney tubules more permeable to sodium and encourages sodium
reabsorption, thus increasing water reabsorption and concentrating the urine. a. ADH b. ANP c. Angiotensinogen d. Aldosterone e. AMP
The gene that codes for the repressor protein of the E. coli lactose operon is:
a. located between the operator and the promoter. b. downstream from the promoter region. c. downstream from the operator. d. constitutive. e. turned off most of the time.
An alarm call benefits multiple individuals that are both related and unrelated (r = 0). Can this cooperation still evolve according to Hamilton's rule? (There are 1, 2,…, A individuals that are related to the donor by r1, r2,…, rA and receive benefits b1
a. No, unrelated individuals will automatically set the benefits to 0 as Hamilton's rule for multi-ple individuals is . b. No, this case no longer addresses inclusive fitness and Hamilton's rule does not apply. c. Yes, if there are more related individuals benefiting than unrelated individuals as Hamilton's rule for multiple individuals is. d. Unrelated individuals will have no effect as Hamilton's rule for multiple individuals is.