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5 Written questions

5 Matching questions

  1. frameshift mutation
  2. TATA box
  3. exon
  4. poly-A tail
  5. missense mutation
  1. a The most common type of mutation, a base-pair substitution in which the new codon makes sense in that it still codes for an amino acid.
  2. b A mutation occurring when the number of nucleotides inserted or deleted is not a multiple of three, resulting in the improper grouping of the following nucleotides into codons.
  3. c A promoter DNA sequence crucial in forming the transcription initiation complex.
  4. d A coding region of a eukaryotic gene or expressed region
  5. e The modified end of the 3' end of an mRNA molecule consisting of the addition of some 50 to 250 adenine nucleotides.

5 Multiple choice questions

  1. The synthesis of a polypeptide using the genetic information encoded in an mRNA molecule. There is a change of languagefrom nucleotides to amino acids
  2. An initial RNA transcript; also called pre-mRNA when transcribed from a protein-coding gene
  3. A chemical or physical agent that interacts with DNA and causes a mutation.
  4. A three-nucleotide sequence of DNA or mRNA that specifies a particular amino acid or termination signal; the basic unit of the genetic code.
  5. within ex: intron

5 True/False questions

  1. one gene-one polypeptide hypothesisAn enzyme that links together the growing chain of ribonucleotides during transcription.


  2. transcriptionThe synthesis of RNA on a DNA template.


  3. anti-within ex: intron


  4. template strandThe DNA strand that provides the template for ordering the sequence of nucleotides in an RNA transcript.


  5. signal-recognition particle (SRP)Modification of RNA before it leaves the nucleus, a process unique to eukaryotes.