Multiple Choice
What is the complementary mRNA codon for the DNA sequence 'ATG'?
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15. Gene Expression
Genetic Code
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The genetic code is based upon the reading of how many bases at a time?
A
Three bases
B
Four bases
C
One base
D
Two bases
Verified step by step guidance1
Understand that the genetic code is a set of rules used by living cells to translate information encoded within genetic material (DNA or mRNA sequences) into proteins.
Recognize that the genetic code is read in groups of nucleotides, which are the building blocks of DNA and RNA.
Recall that each group of nucleotides that codes for a single amino acid is called a codon.
Note that a codon consists of three nucleotides, which means the genetic code is read three bases at a time.
Conclude that the correct answer to the question is 'Three bases', as each codon is made up of three nucleotides.
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