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Assertion (A) Transcription unit is ofte...

Assertion (A) Transcription unit is often monocistronic in eukaryotes and polycistronic in prokaryotes
Reason (`R`) Exons do not appear in mature RNA, introns appear is mature RNA.

A

A and R are true and R is correct explanation of A

B

A and R are true, but R is not correct explanation of A

C

A is true, but R is false

D

A is false, but R is true

Text Solution

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The correct Answer is:
C
During the RNA splicing introns are removed and exons are joined to form a contiguous coding. This make mature mRNA ready for translation
Eukaryotic mRNA moleculea are monocistonic containing the coding sequence only for one polypeptide In prokaryotes an individual bacterial mRNA molecules are polycistronic having transcripts of several genes
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ARIHANT NEET-GENE, ITS EXPRESSION AND REGULATION-Chapter Exercise (C) Medical entrance s gallery
  1. In a 3.2 Kbp long piece of DNA , 820 adenine bases were found. What ...

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  2. A beads on a string like chromatin with 200 beads or nucleosomes conta...

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  3. Assertion (A) Transcription unit is often monocistronic in eukaryotes ...

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  4. Which is A and B is given digram?

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  5. In translation, amino acyle tRNA synthetase recognises the correct ami...

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  6. Which RNA is synthesised by transcription done through the RNA polymer...

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  7. The t-RNA anticodon 3' - UAC-5' will pair with the m-RNA codon :

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  8. What will be the percentage of guanine in a DNA molecule having 20% ad...

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  9. Which one of the following is wrongly matched?

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  10. Transformation was discovered by

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  11. What will be the number of histone molecules in a chromatin fibre ha...

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  12. The sequence of nucleotides AUG CUU CUC indicates that it is a segment...

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  13. In eukaryotic genes, coding sequences are called :

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  14. Which site of the tRNA pairs through hydrogen bonding with the triplet...

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  15. Find the wrongly matched pair .

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  16. If an inheritable mutation is observed in a population at high freque...

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  17. An eukaryotes, RNA polymerase II transcribes :

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  18. Identify the wrong statement about DNA.

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  19. Which property among these listed below is not a criteria for a molecu...

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  20. Which triplet codon does not have t-RNA associated with it ?

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