12 terms

Biology Natural Selection (Rovirosa)


Terms in this set (...)

Species vary globally
Species vary locally
Species vary over time
Charles darwin's three observations
A change in the genetic makeup of a population over time
Natural selection
Process where organisms better adapted to their environment tend to survive and produce more offspring
-Struggle for existence
-Heritable variation
-Variable fitness
What three factors are required for natural selection to work.
Heritable characteristic that increases an organism's ability to survive and reproduce in its environment
A bird that opens his wings to look bigger in order to scare off predators.
What is an example of adaption
How well an organism can survive and reproduce in its environment
Descent with modification
Theory that Living species are descended with modification from common ancestors
Survival of the fittest
A living organism that adapts to their environment better giving them more chances of survival
Physical or behavioral
Adaption can be _______ or _____ traits
Natural variations
Individuals have ____
Heritable traits
The variations that individuals have are ___