5 Written questions
5 Matching questions
- Silent mutation
- Genetic variation
- Central dogma
- a Characteristic coded for by one gene.
- b Variation of genetic information in a gene pool.
- c A change in DNA sequence within a gene that does not lead to a change in the amino acid sequence due to the degeneracy of the genetic code.
- d The fundamental relationship between DNA, RNA and protein first outlined by Francis Crick in 1958.
- e Type 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.
5 Multiple choice questions
- Three types of RNA that form an important structural and functional role within the ribosome.
- One of three triplet codes (UGA, UAG or UAA) that causes the termination of translation by the ribosome.
- Eukaryotic cell or organism that has two different alleles for a specific gene.
- Genetic 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.
- Alleles present within cells of an individual, for a particular trait/characteristic.
5 True/False questions
Genetic reassortment → Variation introduced due to the random orientation and subsequent segregation of maternal and paternal chromosomes during meiosis 1, or sister chromatids at meiosis 2.
Polarity → Refers to the location of cells with respect to the head end (anterior) or tail end (posterior) of the body.
Insertion/deletion mutation → A change in DNA sequence that introduces a premature stop codon within a DNA coding sequence.
Bleb → An alternative version of a gene carrying sequence differences.
Crossing over → Where non-sister chromatids exchange alleles during prophase I of meiosis.