5 Written questions
5 Matching questions
- Frameshift mutation
- a A length of messenger RNA carrying multiple ribosomes at different stages of protein synthesis.
- b An alternative version of a gene carrying sequence differences.
- c Specialised sex cells. In many organisms the gametes are haploid and are produced by meiosis.
- d Failure of members of a homologous pair of chromosomes, or of a pair of chromatids, to separate during nuclear division.
- e 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 Multiple choice questions
- Refers to the location of cells with respect to the head end (anterior) or tail end (posterior) of the body.
- Structural change to genetic material - either to a gene or to a chromosome.
- Eukaryotic cell or organism having only one set of chromosomes. Denoted by n.
- Programmed cell death. An orderly process by which cells self-destruct in an orderly fashion after a certain number of cell divisions, or if they cannot repair DNA damage.
- A stretch of DNA consisting of two or more genes that are transcribed together and coregulated.
5 True/False questions
Translation → Stage of protein/polypeptide synthesis in which the amino acids are assembled at ribosomes according to the genetic code.
Stutter mutation → A mutation that even though it may change a coding sequence exerts no harmful or beneficial effects.
Crossing over → The DNA strand encompassing a gene that carries the sequence identical to the message sequence.
Homozygous → Eukaryotic cell or organism that has two identical alleles for a specific gene.
Genetic variation → Variation of genetic information in a gene pool.