Which does a successful PCR require?
A) at least 100 starting DNA template molecules
B) some sequence information about the region to be amplified
C) a cloned cDNA of the region to be amplified
D) a double-stranded DNA template of at least 100 kb to amplify
E) an undamaged DNA template with intact chromosomes
B) some sequence information about the region to be amplified
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If you had a friend who was unable to see color, you would expect that your friend's eyes had defective
A. cone cells. B. rod cells. C. cornea. D. iris. E. optic nerve.
An autosomal recessive disorder ____
a. requires that only one parent be a carrier b. displays its symptoms in heterozygotes c. is more frequent in males than females d. requires that both parents are carriers e. only affects females
In the streak plate method, what is the best way to ensure that the loop is cool, after it has been flamed?
A) Touch the loop to your finger to determine the temperature B) Touch the loop to an uninoculated area of the plate C) Touch the loop to an inoculated area of the plate
Do individuals change when natural selection occurs? Why or why not?
A. Yes. Acquired characteristics produce adaptations. B. Yes. Individuals change because the population does. C. No. Individuals do not change, but the population does. D. No. Individuals do not change because the population does not.