Environmental variation
When an organism’s phenotype is affected by it’s surroundings
Acquired characteristics
A characteristic in an organism that can change during its life due to a change in the environment
Discontinuous Variation
Is where the data can only take a limited set of values
Number of leaves
Continuous Variation
Where the data can be a value in any range
Leaf length
Normal distribution (continuous data)
When many individuals have the middle value for a feature with fewer individuals having greater or lesser values