DNA fragments can be separated in gel electrophoresis because
A) nitrogenous bases have a net positive charge.
B) nitrogenous bases have a net negative charge.
C) phosphate groups have a net positive charge.
D) phosphate groups have a net negative charge.
Correct Answer:
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Q3: Gene probes can be labeled for detection
Q5: Which of the following is not true
Q8: Geneticists can create sequences of DNA from
Q8: Sequences of DNA that are identical when
Q10: Analysis of DNA fragments in gel electrophoresis
Q10: DNA strands can begin to separate at
Q11: Amplification of DNA is accomplished by
A)polymerase chain
Q12: DNA strands can be clipped crosswise at
Q13: EcoRI and HindIII are
A)palindromes.
B)reverse transcriptases.
C)restriction endonucleases.
D)ligases.
E)DNA polymerases.
Q20: The size of DNA is often given
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