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DNA

What sequence...

Question

What sequence on the template strand of DNA corresponds to the first amino acid inserted into a protein?

A

UAC

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B

TAC

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C

UAG

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D

AUG

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Solution

The correct option is B TAC
The first mRNA codon to specify an amino acid is always AUG. A DNA strand with the sequence TAC will corresponds to the first amino acid i.e., AUG. On DNA strand A always pairs with T while on RNA strand A always pairs with U.

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