Which of the following methods of DNA amplification does NOT require cloning?
a. reverse transcription
b. polymerase chain reaction
c. cloned DNA
d. reverse transcription and polymerase chain reaction
e. polymerase chain reaction and cloned DNA
ANSWER: b
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Sister chromatids detach from one another and
become visibly separate chromosomes during
a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase
Which part of the loop of the nephron actively transports salts from the filtrate to interstitial tissues?
Which set of values would result in a population with a growth rate of zero?
a. b = 1000, d = 500, i = 750, e = 1000 b. b = 1000, d = 500, i = 1000, e = 1000 c. b = 1000, d = 500, i = 1500, e = 1000 d. b = 1000, d = 500, i = 0, e = 1000 e. b = 1000, d = 500, i = 500, e = 1000
Consider a diploid population in which a single locus supports two alleles, A1 and A2 and three genotypes P = (p2), R = (2pq) and Q = (q2). Assuming the values of P and Q are known, what is the value of R?
a. p2 b. q2 c. P+Q d. 1-(P+Q) e. None of the above