B14
Variation
Nurture
You need resources to fulfil your genetic potential
You could have all the genetic advantages possible BUT live in a difficult environment.
Correct Environment
Environmental Variation
Nature
"Apple seed will never grow and oak tree".
Inherited characteristic from parents.
Hair Colour
Eye Colour
Sex
Height
Less variation between family members
More variation with general population
Evolution by Natural Selection
Causes Mutations
Change the genes.
Some mutation Harmful
Some mutation Beneficial
Happens through Meiosis
Individuals exhibit great variation
Less likely to: 1) Survive
2) reproduce
More likely to:
1) Survive
2) Reproduce
"Survival of the fittest"
Speciation
If the changes between groups of individuals become large enough, They can no longer interbreed.
Species
What is meant by the Fittest
Fittest to:
1) Survive in a particular environment.
2) Survive in a changing or new environment.
3) Out compete a competitor.
4) Fool a Predictor
5) Hunt for food better
6) Attract more mates.
Most mutations don't make much difference.