Classification, variation and speciation
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| What does Hardy-Weinberg rely on | No mutations, no movement of gene pool, no naturel selction, large population, random mating
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| What is the Hardy-Weinberg equation? | q2 + 2pq + q2 = 1
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| What does naturel selection result from? | Differant fertility of organisms
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| What is the theory of naturel selction? | That allele frequency will increase for the most successful gene, as they will breed mor successfully
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| What is directional selction? | Movement of population towards diferant characteristic due to selective pressure
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| What causes directional selection? | Environmental change
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| What is stabalising selction? | The removal of the extremes of a gene, leaving the moderates
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| What causes stablising selection? | it occurs naturelly in all organisms
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| What is disruptive selction? | Removal of moderates to leave the extremes
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| What causes disruptive selection? | Large environmental changes
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| What is speciation? | Formation of 2 species from one
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| What are the two types of speciation? | Allopatric and sympatric
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| What are the differances between the two types of speciation? | Allopatric caused by geograpical sepaation, symapatric occurs within the same environment
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| Why can sympatric speciation occur? | Mechanical isolation, gamates prevented from meeting, no fusion of gamates, hybrid inviability, hybrid sterility, behavioural isolation
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| What is mechanical isolation? | Incompatabilty of genetalia, leads to sympatric speciation
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| What is hybrid inviabiity? | Failure of the embryo to develop, leads to sympatric speciation
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| What is hybrid sterility? | Inability of chromosomes to pair, leads to sypatric speciation
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| What happens when you move from species to kingdom? | Number of organisms increases
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| What happens when you move from kingdom to species? | Number of simularities increases
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| What are the 5 kingdoms? | Prokaryote, Protoctista, Fungi, Plantae, Animalia
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| Which kingdoms contain prokaryotic cells? | Prokaryotes
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| Which kindoms contain eukaryotic cells? | Protoctista, fungi, plantae, animalia
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| Do prokaryotes have a cell wall? | Yes
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| Do Protoctista have a cell wall? | Some
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| Do Fungi have a cell wall? | Yes
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| Do Plantae have a cell wall? | Yes
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| Do animalia have a cell wall? | No
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