Multiple Choice
Which statement about DNA and RNA is correct?
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15. Gene Expression
Central Dogma
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Which of these is the correct amino acid chain produced from the DNA template strand 3'-TACGGTACG-5'?
A
Alanine-Serine-Leucine
B
Methionine-Glycine-Tyrosine
C
Valine-Proline-Serine
D
Leucine-Arginine-Phenylalanine
Verified step by step guidance1
Identify the DNA template strand provided: 3'-TACGGTACG-5'.
Transcribe the DNA template strand into mRNA. Remember that during transcription, adenine (A) pairs with uracil (U), thymine (T) pairs with adenine (A), cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C). The mRNA strand will be 5'-AUGCCAUGC-3'.
Divide the mRNA sequence into codons, which are groups of three nucleotides. The codons from the mRNA strand are AUG, CCA, and UGC.
Use the genetic code to translate each mRNA codon into its corresponding amino acid. AUG codes for Methionine, CCA codes for Glycine, and UGC codes for Cysteine.
Compare the translated amino acid sequence Methionine-Glycine-Cysteine with the given options to determine the correct amino acid chain.
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