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mutations
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WHAT?.....
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DO YOU SEE- WHAT HE SEES?
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MUTATIONS CHANGE IN DNA DNA ULTIMATELY DIRECTS THE PRODUCTION OF THE PROTEINS THAT AFFECT AN ORGANISMS METABOLISM & DEVELOPMEN T. MUTATIONS CAN I NVOLVE ENTIRE CHROMOSOMES OR SPECIFIC GENES.
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Sickle cell anemia, down syndrome gene chromosome
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Turners syndrome,cystic fibrosis
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Duchenne muscular dystrophy, hemophilia
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Somatic mutations: mutations that take place in the body cells DNA, but do not affect their offspring. FYI - albinism can be the result of a somatic or germ-line mutation
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MORE MUTATION INFO: MUTATIONS CAN TAKE PLACE IN GERM CELLS (SEX CELLS) SUCH AS EGG & SPERM, THEY DO NOT AFFECT THE ORGANISM ITSELF BUT GET PASSED ONTO THE OFFSPRING. SOMATIC MUTATIONS TAKE PLACE IN BODY CELLS AND ARE PASSED ON TO THE DAUGHTER CELLS THROUGH MITOSIS.
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mutations Majority of mutations are harmful. 3 kinds: deletion- a section of DNA is lost or deleted. insertion - extra base pairs are inserted into a different place on the DNA. substitution – exchanges one base for another such as switching A to G.
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mutagens Environmental factors that damage DNA. Examples: UV rays, radiation, cigarette, asbestos and certain viruses.
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