Variation is the differences between individuals of the same species, caused by genetic and environmental factors. Surveys into variation give data that are continuous, which means to come in a range, ...

A characteristic of any species with only a limited number of possible values shows discontinuous variation. Here are some examples: For any species a characteristic that changes gradually over a ...

Behaviours are complex traits determined by the combined effects of many independently segregating genes that are sensitive to the environment. As they are typical quantitative traits they require the ...