It is the differences between people
The two causes of variation are
Genetic inheritance
Traits that come through the genes.EG: eye colour, shape of nose
Influences by the environment
Traits that come from the environment.EG: language spoken, length of hair
Both
Traits that come form both variation causes.EG: height, colour of skin, weight
Variation types
continuous
This kind of variation has a range of values available. For example, height is a continuous variation because everyone is a different height. It is from this that we can calculate averages for certain types of people. EG: ages
Dicontinuous
This type of variation has a limited number of values. EG: if a person can roll their tongue or not. It only has 2 vvalues, and someone cannot 'half roll' their tongue
What are genetics?
The science of heridity!!!! :D :D
Common Genetic backgound will...
Produce offspring with similar physical and behavioural traits.EG: parent 1 is tall, parent 2 is medium height= offpring that is tall, or medium height
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