Survival of the fittest
Evolution of crossing over
The tree of life
Evolution is the slow change in a species over a long period of time.
Evolution occurs within individual organisms due to environmental pressures.
Evidence of evolution can be seen in the fossil record.
Each organism must produce offspring that are genetically identical to the parent.
The environment must be unchanging for at least a million years.
Mutations must create variations in traits.
An increase in the number of finches with thicker beaks.
A decrease in the number of finches with thicker beaks.
An increase in the finch population.
An increase in the number of plants with seeds.
Cold temperatures made them all grow hair.
Each of them decided that hair would look good.
As each kind of mammal evolved, it independently developed hair.
They all have a common ancestor which also had hair.
Have the greatest number of similar sequences
Have the fewest similar sequences
Start and end with the same base pairs
Have the greatest number of different base pair sequences.