5 Written questions
5 Matching questions
- Nonsense mutation
- a Eukaryotic cell or organism that has two different alleles for a specific gene.
- b The points where non-sister chromatids within a bivalent join, where they cross over.
- c Macromolecule that is a polymer of many amino acids joined by peptide bonds. May comprise more than one polypeptide chains.
- d A change in DNA sequence that introduces a premature stop codon within a DNA coding sequence.
- e Characteristic coded for by one gene.
5 Multiple choice questions
- Eukaryotic organisms or cell with more than two sets of chromosomes.
- All the genetic information within an organism/cell.
- Structural change to genetic material - either to a gene or to a chromosome.
- Structure formed on the centromere that attaches the chromosomes to the spindle fibres during mitosis and meiosis.
- The DNA strand encompassing a gene that carries the sequence identical to the message sequence.
5 True/False questions
Phenotype → Observable characteristics of an organism.
Initiator codon → One of three triplet codes (UGA, UAG or UAA) that causes the termination of translation by the ribosome.
Genetic variation → The way in which the 64 possible base triplets map onto the 20 amino acids that are used in polypeptide chains.
ATP → Molecule (nucleotide derivative) found in all living cells and involved in energy transfer. When it is hydrolysed energy is released.
Operon → A sequence of three bases that codes for a single amino acid according to the genetic code.