Inheritance and Variation part 2 0.0 / 5 ? BiologyInheritance and Variation part 2GCSEAQA Created by: holly.preston12345Created on: 28-01-19 19:59 Evidence for evolution Evidence for evolution 1 of 29 What has provide evidence for evolution? Fossils and antibiotic resistance in bacteria 2 of 29 What is antibiotic resistant bacteria? Mutations produce antibiotic resistant strains which can spread 3 of 29 What is the evidence for evolution for antibiotic resistant bacteria? Resistant strains are not killed, Strain survives and reproduces and People have no immunity to strain and treatment is ineffective 4 of 29 What evidence is available for the theory of evolution? Darwin's theory-has been shown that characteristics are passed on to offspring in genes 5 of 29 Is the theory of evolution accepted? Yes 6 of 29 Fossils Fossils 7 of 29 What is a fossil? ‘Remains’ of ancient organisms which are found in rocks 8 of 29 How may fossil fuels be formed (1)? From parts of organism that have not decayed as necessary conditions are absent 9 of 29 How may fossil fuels be formed (2)? When parts of the organism replaced by minerals as they decay 10 of 29 How may fossil fuels be formed (3)? As preserved traces of organisms such as footprints, burrows and rootlet traces 11 of 29 What were early forms of life? Soft bodied- few races left behind and have been destroyed by geological activity 12 of 29 What did the destroyed traces mean? That scientist cannot be certain about how life began 13 of 29 What can fossil tell scientist? How much or how little different organisms have changed over time 14 of 29 Extinction Extinction 15 of 29 What is extinction? When no members of a species survive 16 of 29 Give factors that contribute to the extinction of a species: Extreme geological events, disease, climate change, habitat destruction, hunting by humans 17 of 29 Resistant bacteria Resistant bacteria 18 of 29 Why can bacteria produce rapidly? Because they reproduce at a fast rate 19 of 29 What is resistant to antibiotic? MRSA 20 of 29 Give 1 way to reduce the rate of development of antibiotic resistant strains: Doctors should not prescribe antibiotics inappropriately 21 of 29 The development of new antibiotics is... costly and slow 22 of 29 Classification of living organisms Classification of living organisms 23 of 29 What did Carl Linnaeus do? Classified living things 24 of 29 In Carl Linnaeus kingdoms what are organisms named by? The binomial system of genus and species 25 of 29 Kingdom: Animalia 26 of 29 Due to improvements... in microscopes, and the understanding of biochemical processes, new models of classification were propose 27 of 29 What did Carl Woese develop? 3 domain based on chemical analysis 28 of 29 In Carl Woese system what were organism divided into? Archaea (primitive bacteria), true bacteria, eukaryota 29 of 29
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