Multiple Choice
A particular triplet of bases in the coding sequence of DNA is AAA. The anticodon on the tRNA that binds the mRNA codon is ________.
3. Energy & Cell Processes
Genetic Code
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When RNA is being made, the RNA base __________ always pairs with the base __________ in DNA.
A
U; T
B
T; G
C
A; U
D
U; A
Verified step by step guidance1
Understand the basic concept of base pairing between DNA and RNA. In DNA, the bases are adenine (A), thymine (T), cytosine (C), and guanine (G). In RNA, the bases are adenine (A), uracil (U), cytosine (C), and guanine (G).
Recognize that during transcription, RNA is synthesized using DNA as a template. The base pairing rules dictate how the bases in RNA pair with the bases in DNA.
Recall that adenine (A) in DNA pairs with uracil (U) in RNA, replacing thymine (T) which is found in DNA but not in RNA.
Identify that cytosine (C) in DNA pairs with guanine (G) in RNA, and vice versa, maintaining the same pairing as in DNA.
Conclude that when RNA is being made, the RNA base uracil (U) always pairs with the base adenine (A) in DNA, following the base pairing rules.
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