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of 66 available terms

5 Written Questions

5 Matching Questions

  1. Sexual reproduction
  2. DNA mutation
  3. Morphogen
  4. Mutation
  5. Ribosomal RNA
  1. a A substance that controls the pattern of tissue development. It is produced in a particular region of a developing organism. It diffuses to other cells, which then enter a specific developmental pathway.
  2. b A change to the DNA structure altering the sequence of bases.
  3. c Structural change to genetic material - either to a gene or to a chromosome.
  4. d Three types of RNA that form an important structural and functional role within the ribosome.
  5. e Production of new organisms involving fusion of nuclei from male and female gametes, usually from unrelated individuals. Increases genetic variation in the population.

5 Multiple Choice Questions

  1. The way in which the 64 possible base triplets map onto the 20 amino acids that are used in polypeptide chains.
  2. Characteristic coded for by one gene.
  3. Large polymer molecule made of many amino acids joined by peptide bonds.
  4. Pair of synapsed (joined) homologous chromosomes during prophase and metaphase of meiosis I.
  5. Causes an expansion or contraction of a run of identical codons within a gene affecting the length of a run of identical amino acids in the polypeptide.

5 True/False Questions

  1. Proto-oncogeneMacromolecule that is a polymer of many amino acids joined by peptide bonds. May comprise more than one polypeptide chains.

          

  2. Discontinuous variationGenetic variation where there are distinct phenotypic categories. Usually controlled by one gene to a few genes. Examples include cystic fibrosis, shape of earlobes in humans and height in pea plants.

          

  3. Coding strandThe DNA strand encompassing a gene that carries the sequence identical to the message sequence.

          

  4. transfer RNAStage of protein/polypeptide synthesis in which the amino acids are assembled at ribosomes according to the genetic code.

          

  5. ChiasmataPair of synapsed (joined) homologous chromosomes during prophase and metaphase of meiosis I.

          

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