bi28 - LMathias Whatcausesmutation Spontaneous UVlight...

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Cause and effect of mutation L Mathias
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What causes mutation Spontaneous Increases caused by environmental factors UV light X-rays Benzene, formaldehyde, carbon tetrachloride
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Gametic and somatic mutations Gametic – testis of males, ovaries of females,  inherited Somatic – in normal body cells occuring beyond  zygote formation, not inherited but may effect the  person during their lifetime. Chimaeras
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Mutagens and their effects Ionising radiation – Nuc  radiation, xrays, gamma rays  (e.g. medical treatment)  associated with development  of cancers (e.g. leukaemia,  thyroid cancer and skin  cancer
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Mutagens and their effects Viruses and  microorganisms – integrate  into human chromosome,  upset genes and can trigger  cancer
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Mutagens and their effects Environmental  poisons – Organic  solvents such as  formaldehyde,  tobacco, coal tars,  benzene, asbestos,  some dyes
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bi28 - LMathias Whatcausesmutation Spontaneous UVlight...

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