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5 Written questions

5 Matching questions

  1. Nonsense mutation
  2. Heterozygous
  3. Protein
  4. Monogenic
  5. Chiasmata
  1. a Eukaryotic cell or organism that has two different alleles for a specific gene.
  2. b The points where non-sister chromatids within a bivalent join, where they cross over.
  3. c Macromolecule that is a polymer of many amino acids joined by peptide bonds. May comprise more than one polypeptide chains.
  4. d A change in DNA sequence that introduces a premature stop codon within a DNA coding sequence.
  5. e Characteristic coded for by one gene.

5 Multiple choice questions

  1. Eukaryotic organisms or cell with more than two sets of chromosomes.
  2. All the genetic information within an organism/cell.
  3. Structural change to genetic material - either to a gene or to a chromosome.
  4. Structure formed on the centromere that attaches the chromosomes to the spindle fibres during mitosis and meiosis.
  5. The DNA strand encompassing a gene that carries the sequence identical to the message sequence.

5 True/False questions

  1. PhenotypeObservable characteristics of an organism.

          

  2. Initiator codonOne of three triplet codes (UGA, UAG or UAA) that causes the termination of translation by the ribosome.

          

  3. Genetic variationThe way in which the 64 possible base triplets map onto the 20 amino acids that are used in polypeptide chains.

          

  4. ATPMolecule (nucleotide derivative) found in all living cells and involved in energy transfer. When it is hydrolysed energy is released.

          

  5. OperonA sequence of three bases that codes for a single amino acid according to the genetic code.

          

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