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Download AS 90715 version 2 Describe the role of DNA in relation to gene
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AS 90715 version 2 Describe the role of DNA in relation to gene expression Level 3 4 Credits This achievement standard involves the description of the role DNA has in relation to gene expression and the determination of phenotype. Achievement Criteria Achievement Achievement with Merit Achievement with Excellence Describe biological concepts and processes relating to gene expression. Explain biological concepts and processes relating to gene expression. Discuss biological concepts and processes relating to gene expression. Concepts and processes relating to gene expression include: the role of DNA in gene expression: selected from o nucleic acid structure and function o protein structure and function o the genetic code o DNA replication o protein synthesis (transcription, translation) allele interactions: selected from o dominance o incomplete dominance o co-dominance o multiple alleles o lethal alleles o linkage, o sex linkage o pleiotropy gene-gene interactions: selected from o epistasis, o collaboration o polygenes gene-environment interactions: Gene-environment interactions include examples of modification of phenotype by environment, eg determination of sex in crocodile hatchlings by temperature. mutations: selected from o gene mutations o chromosomal mutations the control of metabolic pathways by gene expression: selected from o simple feedback control in prokaryotes (repressors, inducers), the action of transcription factors, enhancers in eukaryotes o consequences to metabolic pathways resulting from the effect of gene mutation, eg phenylalanine pathways and PKU. Terms • Describe requires the student to give characteristics of or an account of. • Explain requires the student to provide a reason as to how or why something occurs. • Discuss requires the student to show understanding by linking biological ideas. It may involve students in justifying, relating, evaluating, comparing and contrasting, analysing. No Brain Too Small BIOLOGY