Biology - Variation table
Variations may be structural, physiological, biochemical and behavioural.
More obvious in domestic animals which have been bred for particular
traits; e.g. cats with/without tails; dogs with flattened or elongated
snouts and hair of different textures and length; horses of different
maximum size; plant height of peas; ability to produce muscle protein etc.
Variation in resistance to disease; ability of humans to distinguish
red/green; tasting or smelling certain chemicals
Blood types of humans; variation in production of particular enzymes
which affect phenotypes; kernel colour of maize
Differences evident particularly in relation to the differing degrees of
Differences due to stage in life cycle, for example, between juvenile
and adult leaves of eucalypts
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