Meiosis and germination of spores is indicated
by letter
a. A.
b. B.
c. C.
d. D.
e. E.
C
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The polymerase chain reaction (PCR) can detect as few as 10 toxin-producing Escherichia coli in a population of 100,000 microorganisms isolated from soft cheese samples.
Answer the following statement true (T) or false (F)
Which of the following has the shortest axons?
a. interneurons b. motor neurons c. sensory neurons d. the brain stem
In a colony of 100 guinea pigs, 16 show the recessive trait of bristly hair. What is the percentage of
heterozygotes in the population?
a. 48 percent b. 52 percent c. 36 percent d. 24 percent e. 84 percent
In a randomized, controlled, double-blind study:
A) neither the experimenter nor the subject know whether the subject is in a control group or an experimental group. B) individuals will be assigned to an experimental or control group depending on whether or not they took part in a pilot study. C) experimental subjects are blindfolded when given the experimental treatment. D) all experimental groups are filled randomly using no particular criteria. E) the experimenter knows which subjects are in the experimental group but not the control group.