Biology (2) AQA

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  • Created by: abikerr
  • Created on: 07-05-11 14:26

Random Bits of AQA biology 2........

Causes of variation: genetic factors, differences in environmental factors.

Founder effect - low genetic variation that results from starting a new population with a low number of individuals.

Genetic bottlenecks - An event kills a significant number of the population, less diverse genetics, low variety in species.

Haemoglobin - Protein, quaternary structure, 4 polypeptide chains, 4 haem groups contain iron, each haem group contains one oxygen molecule. When occupyed, called oxyhaemoglobin. When CO2 present (exercise) shift to the right, haemoglobin uploads…


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