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NEET2019ZoologyMolecular Basis of InheritanceActual

What will be the sequence of mRNA produced by the following stretch of DNA? 3'ATGCATGCATGCATG5' TEMPLATE STRAND 5'TACGTACGTACGTAC3' CODING STRAND

Options

  1. A3'-AUGCAUGCAUGCAUG 5'
  2. B5'-UACGUACGUACGUAC 3'
  3. C3'-UACGUACGUACGUAC 5'
  4. D5'-AUGCAUGCAUGCAUG 3'

Correct answer

B. 5'-UACGUACGUACGUAC 3'

Step-by-step solution

The mRNA will be complementary to the DNA strand, but in RNA, uracil will be present in place of thymine. If the template strand is 3^ - A T G C A T G C A T G C A T G - 5 then the base sequence of mRNA for the given DNA strand will be 5^ - U A C GUA A G U A C G U A C - 3'.

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