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Shown is Gene Y. +1 marks the start of transcription. Open boxes are introns. Filled boxes are untranslated (grey) and coding (black) exon sequence. Gene Y is

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(USMLoid) The DNA polymerases and RNA polymerases of both prokaryotes and eukaryotes make copies of nucleotides sequences - but the RNA polymerases are more prone to error. This doesn't matter because

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(USMLoid) You have found a mutant yeast strain that stops growing when the temperature rises above 35 °C. After 24 hours at 36 °C you find that the cells are completely missing all tRNAs, but other types of RNA are present. Which of the following genes is mostly likely to bear the mutation?

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Match the features labeled in the diagram with the names in the following list. i. 5' end of DNA ii. 3' end of DNA iii. 3' end of RNA iv. coding strand v. sense strand vi. template strand vii. 5' end of gene viii. 3' end of gene ix. 5' end of RNA

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(USMLoid) Gene expression is under complex regulation. Which of the following proteins initiates the transcription of a gene?

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A promoter is? :

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In eukaryotes, the ribosomal RNAs are transcribed by

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(USMLoid) Which of the following distinguishes between the the polymerisation of DNA and the polymerisation of RNA?

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Eukaryotic mRNAs are often:

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(USMLoid) Albumin is produced in the liver. Which of the following enzymes is more likely to act on the albumin gene in isolated hepatocyte nuclei compared to the same gene in isolated astrocyte nuclei.

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