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 ________.
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15. Gene Expression
Genetic Code
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
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 process of transcription, where RNA is synthesized from a DNA template. During this process, the bases in RNA pair with complementary bases in DNA.
Recall the base pairing rules: In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).
In RNA, thymine (T) is replaced by uracil (U). Therefore, when RNA is being synthesized, adenine (A) in DNA pairs with uracil (U) in RNA.
Identify the correct base pairing for the given options: The RNA base uracil (U) pairs with the DNA base adenine (A).
Conclude that the correct answer is 'U; A', meaning uracil in RNA pairs with adenine in DNA during transcription.
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