You have discovered a very small amount of DNA from an ancient organism that you want to save and study. What is the very first thing you should do to allow you to study this DNA in the lab?
A. Polymerase chain reaction (PCR)
B. Gel electrophoresis
C. Insert the DNA into a vector
D. RT-PCR
Answer: A
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What percent of our DNA actually codes for
protein products?
a. 3 b. 26 c. 48 d. 71 e. 100
Becoming infected by a disease from a mosquito bite is an example of ____
a. direct contact b. indirect contact c. inhalation infection d. contact with a transmitting vector e. retro-contact
Identify two adaptations in different living organisms and use natural selection to explain how each may have
logically evolved. What will be an ideal response?
DNA fragments cut by most restriction enzymes have:
A) either only sequences of Gs or only sequences of Cs. B) protruding sticky ends. C) double-stranded complementary ends. D) cuts made at random points along one of the strands.