If one strand of DNA has the nitrogenous base sequence at ATCTG, what would be the complementary RNA strand sequence

  • Option 1)

    TTAGU

  • Option 2)

    UAGAC

  • Option 3)

    AACTG

  • Option 4)

    ATCGU

 

Answers (2)

 

 

 

 

Salient features of genetics code -

1. The codon is triplet, 61 codons code for amino acids and 3 codons do not code for any amino acids, hence they function as stop codons.

- wherein

 

 

 

The codons for the various Amino acids.

 

 If one strand of DNA has the nitrogenous base sequence as ATCTG, the complementary sequence of mRNA will be UAGAC.


Option 1)

TTAGU

Incorrect

Option 2)

UAGAC

Correct

Option 3)

AACTG

Incorrect

Option 4)

ATCGU

Incorrect

Correct answer is UAGAC (option 2)because we know that in DNA A pairs with T and G pairs with C but in RNA A pairs with U and G pairs C

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