The Causes of Variation
Differences between individuals can be due to their genes, their environment, or a mix of both.
Is a scar an example of genetic or environmental variation?
What is The Causes of Variation?
"Variation is the range of differences in DNA or physical traits among individuals of the same species."
What is meant by variation in a population?
Which characteristic is most likely to be influenced by both genes and the environment?
Which statement about mutations is correct?
Variation Sources
Genetic: Skin colour, eye colour, blood group.
Environmental: Scars, tattoos, accent.
Combined: Weight, height, intelligence (potentials are genetic, actuals are environmental).
Nearly all phenotypes are the result of both genes and the environment.
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