Jesse Thomas-
Reasons for vairation within species
genotype, environment, natural selection
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Heterophylly
Different types of leaves on the same plant
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l1/l2 mutation
sometimes a mutation occurs in plant leaf layers
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Chimera
mutation has occured in only part of the shoot/plant
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Light
plant grown in different light conditions will have different outcomes
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Edaphic factors
soil conditions that can influences fertillity
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suckers
grow from root system
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watersprouts
grow from trunk above ground
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heterosis
the hybrid is stronger and bigger than either parent
