5 Written questions
5 Matching questions
- Ribosomal RNA
- Homeotic selector genes
- Insertion/deletion mutation
- Paternal chromosome
- a Refers to the location of cells with respect to the head end (anterior) or tail end (posterior) of the body.
- b A change in DNA sequence involving the introduction or loss of 1- 1000s of bases.
- c Member of a pair of homologous chromosomes that originally came from the male gamete.
- d Three types of RNA that form an important structural and functional role within the ribosome.
- e These direct the development of individual body segments. They are master genes that control other regulatory genes.
5 Multiple choice questions
- A length of DNA that codes for one (or more) polypeptides/proteins. Some may code for RNA or regulate other genes.
- 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.
- A mutation that even though it may change a coding sequence exerts no harmful or beneficial effects.
- Eukaryotic organisms or cell with more than two sets of chromosomes.
- The way in which the 64 possible base triplets map onto the 20 amino acids that are used in polypeptide chains.
5 True/False questions
Sexual reproduction → Production of new organisms involving fusion of nuclei from male and female gametes, usually from unrelated individuals. Increases genetic variation in the population.
Allele → Small vesicle formed that breaks away from the cell membrane during apoptosis
Translation → Stage of protein/polypeptide synthesis in which the amino acids are assembled at ribosomes according to the genetic code.
Meiosis → 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.
Stutter mutation → A mutation that even though it may change a coding sequence exerts no harmful or beneficial effects.