Home > Subjects > Biology > Level 2 > 2.3 Genetic variation > Achievement criteria
- Subject: Biology
- AS: AS90459
- Level: 2
- Credits: 3
- External
Biology 2.3 Describe genetic variation and change
Achievement criteria
The level of achievement that you will reach is decided by the way you answer each question. The key words are describe, explain, and discuss biological concepts and processes that relate to genetic variation and change.
Achievement
Make sure you:
- describe biological concepts and processes that relate to genetic variation and change
- understand that mutation leads to variation
- attempt to use a test cross to determine genotype
- are able to interpret biological graphs
- are precise in your descriptions of relevant terms such as genetic, evolutionary, mutation, gene pool, alleles, genes, genotype, phenotype, bottleneck effect, genetic diversity, natural selection, mitosis, and meiosis
- can use Punnett squares to show understanding of biological crosses.
Achievement with Merit
Make sure you can:
- meet the criteria for Achievement
- understand the link between variation and how this affects survival of a population
- explain changes in population due to natural selection and the passing on of genes to offspring
- demonstrate understanding of a dihybrid cross.
Achievement with Excellence
Make sure you can:
- meet the criteria for Merit
- construct logical and well ordered answers that can expand upon key ideas
- evaluate and discuss reasons for lack of variation in offspring by recognising selection pressures
- demonstrate an understanding of relevant biological concepts and relate them to unfamiliar scenarios.
