Factors of Evolution
There are blue and gray dolphins. Suddenly, a green dolphin is born!
Mutation
What decides the beneficial traits in organisms?
Environment
True or false: evolution happens in one individual.
False
When organisms choose their partner for specific phenotypes
Non-Random Mating
What two things must an organism do for natural selection to happen?
Survive and reproduce
Camouflage is an example of...?
Natural selection or adaptation
Yellow birds migrate to the other side of the stream where the white birds are
Gene flow
This process puts selective pressure on a population
Competition
Person A survives and has 1 child. Person B survives and has 4 children. Who has a higher fitness?
Person B
A fire breaks out and kills all of the brown fur and leaves the white fur only
If gene frequency for white fur is 0.4 and changes to 0.35 after an earthquake, did evolution happen? Why or why not?
No! The gene frequency didn't change so it is not evolution.
1) can dying your hair be passed down?
2) what is this type of trait called?
1) no!
2) acquired
What size population is more affected by evolutionary factors?
Small
If the gene frequency decreases from 0.9 to 0.2, what does that mean about 1) the trait and 2) the fitness?
1) harmful
2) decreases
2000 bunnies, 1000 white and 1000 gray, encounter a fire. 100 survive, 50 white and 50 gray.
1) Did evolution happen?
2) What is the *new* gene frequency for each color?
1) No!
2) The gene frequency stayed at 0.5 for both colors.