2. Genetic Control

Genetic Control SQA HIGHER BIOLOGY Control & Regulation

What types of cells are these? What causes them to be different?

What’s going on here? What controls all of this?

Learning Content ,[object Object],[object Object],[object Object],[object Object]

Revision ,[object Object],[object Object],[object Object],[object Object]

Lactose Digestion ,[object Object],[object Object]

Gene Action in Bacteria ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Gene Action in Bacteria ,[object Object],[object Object],[object Object],[object Object],Repressor molecule β -galactosidase

Gene Action in Bacteria ,[object Object],[object Object],Regulator gene produces repressor molecule Repressor binds to operator Structural gene switched off, no β -galactosidase produced

Gene Action in Bacteria ,[object Object],Repressor molecule binds with lactose Operator free so structural gene switched on, β -galactosidase produced What will happen once all of the lactose is broken down?

Gene Action in Bacteria ,[object Object],[object Object],[object Object],[object Object]

Phenylketonuria ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Phenylketonuria ,[object Object],[object Object],[object Object],[object Object],phenylalanine tyrosine intermediate melanin other metaobolites (e.g. thyroxine) enzyme 1 enzyme 2 enzyme 3 other enzymes

Phenylketonuria ,[object Object],[object Object]

Albinism ,[object Object],[object Object]

Differentiation ,[object Object],[object Object]

Genetic Control of Differentiation ,[object Object],[object Object],[object Object],[object Object],[object Object]

2. Genetic Control

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2. Genetic Control