Biology-B6-Evolution 0.0 / 5 ? BiologyEvolution, extinction and natural selectionGCSEAQA Created by: tonisha_Created on: 25-02-23 10:40 Evolution is the ________in inherited characteristics of a _______ overtime through a process of _______ ______? change in inherited characteristics of a population overtime through a process of natural selection 1 of 33 Life first developed on Earth around how long ago? 3 billion yrs ago 2 of 33 Example? single cells 3 of 33 MARKING POINTS FOR 6 MARKER -------------------------------------- First, state? the new characteristic 4 of 33 Then say there would have been a ______ in the charateristic? variation 5 of 33 This is due to ______ or a ______? genetics or a mutation 6 of 33 Talk about the characteristic will be able to_____ the organisms to do? allow 7 of 33 They will? survive 8 of 33 And _______ and _____ on traits to ______? reproduce and pass on traits to offspring 9 of 33 Over several ______ these characteristics become _____? generations widespread 10 of 33 However if two populations of one species become too different in _______? phenotype 11 of 33 This means they cannot ________ to produce _____ _____? cannot interbreed to produce fertile offspring 12 of 33 This means what has formed? a new species 13 of 33 CHARLES DARWIN ------------------------- Darwin went on? an expedition 14 of 33 Where he observed? a variety of life 15 of 33 Darwin observed that within a species there was a wide range? of variation 16 of 33 For any? e.g.? characteristic fur 17 of 33 He concluded that organisms with the most what? suitable characteristics 18 of 33 For the? environment 19 of 33 Are likely to be able to _____, _______ and _______ successfully? compete, survive and reproduce 20 of 33 This idea is called? survival of the fittest 21 of 33 Overtime, the _______ characteristic becomes so ______? beneficial common 22 of 33 Within generations that the become ________and the species will ______? widespread change/evolve 23 of 33 What book did Charles Darwin release? On the Origin Of Species 24 of 33 One controversy was it it challenged? religion 25 of 33 This is because people believed that God? created animals and plants 26 of 33 Another is that at the time scientists felt what? Darwin didnt have enough evidence to back up his ideas 27 of 33 Another was that people didnt understand? how characteristics were inherited 28 of 33 Who opposed Darwins theory? Jean-Baptiste Lamark 29 of 33 Lamark believed that a characteristic that is______ ____ will become more _____ and then this _______ characteristic would be passed onto offspring? that is regularly used will become more developed and then this strengthened characteristic would be passed onto offspring 30 of 33 However this theory was? incorrect 31 of 33 What is extinction? where no individuals of a species remain 32 of 33 What are five causes of extinction? environment changes too quick new predator new disease cant compete catastrophic event 33 of 33
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