U3 KA 6 Evolution
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| What is Natural Selection | The survival of the organisms best ADAPTED to their surroundings. Best adapted survive and reproduce.
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| What is a SPECIES | A group of organisms that look similar and can reproduce resulting in FERTILE offspring
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| Name 3 Isolating Mechanisms | Geographical & Ecological & Behavioural Isolation
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| Give an example of Behavioural Isolation | Different breeding seasons OR Different Courtship behaviour, different mating song
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| Give an example of Geographic Isolation | Rivers OR Seas OR Mountains OR Deserts separating sub-populations
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| Give an example of Ecological Isolation | Sub-populations live in different habitats within an ecosystem and don’t mix OR one sub-population is tolerant to an Abiotic factor the other sub-population can’t tolerate and so they do not mix
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| What is a Niche | The role an organism plays within an Ecosystem
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| What process has led to Antibiotic resistance due to over prescription | Natural Selection
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| What caused the Melanic form of the Peppered Moth to appear | Mutation
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| What process makes it unlikely for the Melanic Peppered Moth to be found in the country side | Natural Selection
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| What characteristic of Bacteria behaviour results in a high mutation rate | High reproduction rate
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| What are the stages in speciation? | Isolation-->Sub populations-->mutations in each sub-pop-->natural selection in each sub-pop-->different selective pressurs in each sub-pop--> reintroduce each sub-pop and infertile offspring =speciation
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| What is the only sourde of new alleles? | Mutations
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| What environmental factors cause mutations | Radiation and some Chemicals
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Created by:
nscobie
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