Home > Subjects > Biology > Level 3 > 3.3 Gene expression > Achievement criteria
- Subject: Biology
- AS: AS90715
- Level: 3
- Credits: 4
- External
Biology 3.3 Describe the role of DNA in relation to gene expression
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 relating to gene expression.
Achievement
- You are able to describe the role of DNA in relation to gene expression.
This means you must be able to recognise, list, name, draw, define, or give characteristics of.
Make sure you:
- understand the structure of DNA (this includes being able to label a DNA molecule) and are able to distinguish between key processes such as transcription, translation, DNA replication, and protein synthesis
- write clear definitions of biological terms, for example, incomplete dominance, co-dominance and pleiotropy
- are able to distinguish between related concepts, for example, genotype and phenotype; allele and gene; co-dominance and incomplete dominance
- can complete a Punnett square, using correct notation
- understand the nature of Okazaki fragments
- understand sex linkage.
Achievement with Merit
- You are able to explain the role of DNA in relation to gene expression.
This means you must be able to describe as well as give reasons as to how or why something occurs.
Make sure you:
- meet the criteria for Achievement
- understand the relationship between DNA, RNA, amino acids, polypeptide chains, and functional protein
- can show clear distinctions between related terms or processes such as transcription and translation, co-dominance and incomplete dominance
- interpret a correctly completed Punnett square
- are able to show and understanding of the control of metabolic pathways in relation to gene expression
- understand how mutations affect protein structure and through that, phenotype.
Achievement with Excellence
- You are able to discuss the role of DNA in relation to gene expression.
- You must be able to show understanding by linking biological ideas. It may involve justifying, relating, evaluating, comparing and contrasting, and analysing.
Make sure you:
- meet the criteria for Merit
- can distinguish between DNA replication and protein synthesis and explain how and why each process occurs
- understand the nature of metabolic pathways
- understand the regulation of gene expression, including the differences between regulation in prokaryotes and eukaryotes
- can link ideas and processes and explain the connections
- are able to understand relevant concepts and relate them to unfamiliar scenarios using appropriate terminology.
