NAME

Question types


Start with


Question limit

of 66 available terms

Print test

5 Written questions

5 Matching questions

  1. Gametes
  2. Gene
  3. Degenerate
  4. Sexual reproduction
  5. Operon
  1. a 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.
  2. b A length of DNA that codes for one (or more) polypeptides/proteins. Some may code for RNA or regulate other genes.
  3. c Specialised sex cells. In many organisms the gametes are haploid and are produced by meiosis.
  4. d A stretch of DNA consisting of two or more genes that are transcribed together and coregulated.
  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. Gene that can undergo mutations to become an oncogene, which induces tumour formation (cancer).
  2. A characteristic where both alleles contribute to the phenotype.
  3. 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.
  4. All the genetic information within an organism/cell.
  5. 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.

5 True/False questions

  1. DNA mutationA change to the DNA structure altering the sequence of bases.

          

  2. PolysomeA length of messenger RNA carrying multiple ribosomes at different stages of protein synthesis.

          

  3. MeiosisType of nuclear division. A reduction division. The chromosome number is halved. It involves two divisions. It produces cells that are genetically different from each other and from the parent cell.

          

  4. BivalentPair of synapsed (joined) homologous chromosomes during prophase and metaphase of meiosis I.

          

  5. Ribosomal RNAThree types of RNA that form an important structural and functional role within the ribosome.