26. Nucleic Acids and Protein Synthesis
Base Pairing
26. Nucleic Acids and Protein Synthesis
Base Pairing - Video Tutorials & Practice Problems
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concept
Base Pairing Concept 1
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example
Base Pairing Example 1
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Problem
ProblemFour species shown below give the percentages of A–T pairings vs G–C pairings. Based on only the information given, which species would have the most significant strength in their base interactions?
A
Drosophila melanogaster (fruit fly) (55% : 45%)
B
Zea mays (corn) (51% : 49%)
C
Neurospora crassa (fungus) (46% : 54%)
D
Escherichia coli (bacteria) (49% : 51%)
4
example
Base Pairing Concept 2
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example
Base Pairing Example 2
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6
Problem
ProblemCytosine (C) makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine (T)?
A
8%
B
16%
C
21%
D
60%
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