In a well-designed experiment, the
a) prediction will be be highly probable if the explanation is correct
b) prediction will be highly improbable if the explanation is incorrect
c) prediction will most likely be true
d) null hypothesis will not be tested
e) both the first and second answer choices are correct
Answer: e) both the first and second answer choices are correct
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Why does the polymerase chain reaction require the samples to undergo numerous cycles, each
containing three different temperatures?
a. The initial cycles don't produce many copies of the original gene since the amplification is exponential in nature. b. The three temperatures are for different processes; the highest temperature separates the double stranded DNA into single strands, the lower temperatures allow a target primer to bind and a DNA polymerase to generate new sequences. c. The enzyme used is from an organism that thrives in high temperatures, so high temperatures must be used. d. Non-target DNA is made during the first 10 cycles so further cycles are required to specifically amplify the target DNA. e. Once the enzyme starts working, you cannot stop the reaction until there are no more nucleotides.
During a menstrual cycle, a midcycle surge of _____ triggers ovulation
a. estrogens c. LH b. progesterone d. FSH
The rapid development of knowledge regarding how to manipulate and analyze DNA, including techniques for modifying its structure, has led to the new field in biology known as
A) graphic display. B) DNA splicing. C) recombinant DNA technology. D) genetics. E) electrophoresis.
One characteristic of class Bivalvia is that they:a
are active swimmers. b. use a radula to feed on algae. c. possess two shells with a hinge. d. use their mantle for locomotion. e. possess shells of overlapping plates