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of 66 available terms

5 Written Questions

5 Matching Questions

  1. Spindle fibres
  2. Paternal chromosome
  3. Frameshift mutation
  4. Kinetochore
  5. Homeotic selector genes
  1. a These direct the development of individual body segments. They are master genes that control other regulatory genes.
  2. b A change in the DNA within a gene involving the insertion or deletion of a number of bases that is not a multiple of three. This causes the downstream gene sequence to be scrambled because the correct reading frame is lost.
  3. c Member of a pair of homologous chromosomes that originally came from the male gamete.
  4. d Structure formed on the centromere that attaches the chromosomes to the spindle fibres during mitosis and meiosis.
  5. e Made of microtubules, these structures are responsible for providing the framework for segregation of the chromosomes during mitosis and meiosis.

5 Multiple Choice Questions

  1. Eukaryotic cell or organism that has two identical alleles for a specific gene.
  2. Eukaryotic cell or organism having only one set of chromosomes. Denoted by n.
  3. Pair of synapsed (joined) homologous chromosomes during prophase and metaphase of meiosis I.
  4. A term applied to the genetic code that describes the fact that more than one triplet code is used to code for all amino acids other than tryptophan and methionine.
  5. The formation of an RNA molecule, using a length of DNA as a template and catalysed by RNA polymerase.

5 True/False Questions

  1. GametesA length of DNA that codes for one (or more) polypeptides/proteins. Some may code for RNA or regulate other genes.


  2. Template strandThe DNA strand that is used for assembly of mRNA by RNA polymerase using base-pairing rules. Complementary to the message sequence.


  3. Stop codonA stretch of DNA consisting of two or more genes that are transcribed together and coregulated.


  4. Hayflick limitEukaryotic cell or organism having only one set of chromosomes. Denoted by n.


  5. DiploidEukaryotic cell or organism having only one set of chromosomes. Denoted by n.


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