Define phenotypic adaptation. Give one example.


Any change that occurs in the body of an organisms in response to changing environmental conditions is termed as Phenotypic adaptation. It includes non-genetic changes in individuals such as physiological modification, acclimatization or behavioural changes to escape or adapt to the environmental conditions.

Examples:


i. Kangaroo rat: Internal fat oxidation occurs to produce water as by product, which helps it to survive in desert conditions.


ii. Desert plants: Thick cuticle, stomata in deep to minimize transpiration


iii. Cold climate Mammals: short ears and limbs to minimize heat loss.


iv. People at high altitude: increased R.B.C production and increased breathing rate.


v. Desert lizards: bask in sun when cold and move to shade when hot.


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