5 Written questions
5 Matching questions
- Stop codon
- Insertion/deletion mutation
- a All the genetic information within an organism/cell.
- b A stretch of DNA consisting of two or more genes that are transcribed together and coregulated.
- c Specialised sex cells. In many organisms the gametes are haploid and are produced by meiosis.
- d A change in DNA sequence involving the introduction or loss of 1- 1000s of bases.
- e One of three triplet codes (UGA, UAG or UAA) that causes the termination of translation by the ribosome.
5 Multiple choice questions
- 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.
- Genes that control the development of the body plan of an organism.
- The fundamental relationship between DNA, RNA and protein first outlined by Francis Crick in 1958.
- Molecule (nucleotide derivative) found in all living cells and involved in energy transfer. When it is hydrolysed energy is released.
- A characteristic where both alleles contribute to the phenotype.
5 True/False questions
Heterozygous → Eukaryotic cell or organism that has two different alleles for a specific gene.
Transcription → The formation of an RNA molecule, using a length of DNA as a template and catalysed by RNA polymerase.
DNA mutation → A change to the DNA structure altering the sequence of bases.
Recessive → Characteristic in which the allele responsible is only expressed in the phenotype if there is no dominant allele present.
Coding strand → A characteristic where both alleles contribute to the phenotype.