Question

If a DNA template strand is 3' TACAATGTAGCC 5', what RNA sequence is produced?

a) 3'TACAATGTAGCC5'
b) 5'ATGTTACATCGG3'
c) 5'AUGUUACAUCGG3'
d) 3'AUGUUACAUCGG5'
e) 3'ATGTTACATCGG5'

Answer 1

The RNA sequence produced from the DNA template strand 3' TACAATGTAGCC 5' is 5'AUGUUACAUCGG3', as RNA transcription creates a complementary strand with uracil (U) instead of thymine (T).

Step-by-step explanation:

The correct RNA sequence produced from the DNA template strand 3' TACAATGTAGCC 5' is 5'AUGUUACAUCGG3'. This is because RNA synthesis involves the creation of an RNA strand that is complementary to the DNA template strand. The process is known as transcription, and it requires matching the DNA nucleotides with their RNA counterparts: adenine (A) pairs with uracil (U) in RNA, and cytosine (C) pairs with guanine (G).

To transcribe the given DNA template strand, each nucleotide is paired with its complement: thymine (T) is transcribed as adenine (A), which in RNA is uracil (U); adenine (A) is transcribed as uracil (U); cytosine (C) as guanine (G); and guanine (G) as cytosine (C). Therefore, the transcribed RNA sequence runs in the opposite direction (5' to 3') to the DNA template strand (3' to 5').

Given the DNA template strand 3' TACAATGTAGCC 5', the transcription process yields the RNA strand 5'AUGUUACAUCGG3', which matches with option (c) from the list provided in the question.