BS 7 - transcription

• Biologie
• WO
• Studiejaar 3

BS 7 - Transcription

put (thoughts, speech, or data) into written or printed form.

"each interview was taped and transcribed"

Gene expression

Gene expression - activating a gene

A gene is turned off or on under certain conditions.

Ex. Genes for making hair is turned off in the liver.

If a gene is turned on it can be read and processed - make a protein.

Proteins control the colour, shape and function of your body.

Protein synthesis

Spontaneous mutation

• Organism created by fertilized ovum
• Cell division occurs by mitosis.
• DNA is copied every time a cell occurs. This can cause                        mutations in the base pair sequence (ATCG).
• Mutation in sex cells can be passed on to offspring at fertilization.
• Mutation in body cells (two copies of each chromosome) only cause a "problem" if the mutation affects both alleles (version of the same gene).
• Spontaneous mutations lead to genetic variation. May be beneficial or harmful.

Do Qs 1 t/m 5