Fill in the blank about RNA transcription. The upper DNA strand is the ______ st

Question

Fill in the blank about RNA transcription.

The upper DNA strand is the ______ strand and the lower DNA strand is the ______ strand. Promoters upstream of the gene are recognized by _______ in prokaryotes or ______ in eukaryotes. RNA polymerase transcribes RNA in a _____ direction. Termination is the result of the transcription of the RNA sequence signal, ______. Post-(or co-)transcriptional modifications include a 5' ____ and 3' ______ as well as splicing out _______. Spliceosomes consist of "snRNPs". SnRNP U1 binds the ______, snRNP U2 binds the ______ and snRNP U5 binds to the ______. In the first splicing step, a 2' rightarrow 5' phosphodiester bond is formed between the _____ and the ____. In the second step, a 3' rightarrow 5' phosphodiester bond is formed between the _____ and the_____.

Explanation / Answer

1) coding strand

2) Non-coding strand

3) RNA polymerase

4)AAUAAA

5) Cap

6)Poly A tail

7) introns

8) 5' splice site

9) Branch point site

10) 3' splice site

11) Intron

12) branch site

13) 3' exon1

14) 5' exon2

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