Evidence for Evolution
Natural Selection
Selection Patterns
Sexual VS Asexual
Random
100
A structure that an organism no longer uses, but it still shows up is a __________
Vestigial Structure
100
Natural selection acts upon __________
Genetic Variation
100
Which type of selection selects FOR the average?
Stabilizing Selection
100
What type of reproduction is responsible for genetic variation?
Sexual
100
What are analogous structures?
Same function different structure
200
How do homologous structures provide evidence of common ancestry?
Because they have the same basic structure
200
Why do scientists think some organisms share similar developmental patterns?
They share a COMMON ANCESTOR
200
If only one color of flowers are fed on. What type of selection pattern is going to be shown?
Directional Selection
200
What is the only way to get genetic variation in a population who reproduces asexually?
Mutations
200
Example of analogous strcture
Insect & bird wing
300
What is the strongest form of evolutionary evidence?
Biochemical evidence or DNA
300
What was Lamarck's theory?
Acquired traits are passed onto offspring. Organisms can change body structure based off needs
300
In a bird population, the medium beak size is selected against. What type of selection is shown?
Disruptive Selection
300
Why are organisms that reproduce sexually more diverse than organisms that reproduce asexually?
They are more complex because of diveraity
300
What is artificial selection?
Selection based on human preferences
400
The horse is most related to what organism?
The Zebra
400
If you only grow one type of plant, and all of those plants die of the same disease. What is true about the plant population?
There was no variation between their genes
400
Babies born too heavy or too light have a harder time surviving. What type of selection pattern is this demonstrating?
Stabilizing
400
What is the major advantage of sexual reproduction?
Genetic Variation
400
Why is the fossil record not the best form of evidence for evolution?
There are missing links in the fossil records
500
This is an example of what type of evidence?
Biochemical Evidence
500
If a predator preys on an organism. What part of Darwin's theory is being demonstrated?
Survival of the fittest
500
There use to be a population of brown & white moths. A volcano erupted & the environment was darker. What type of selection pattern can we expect to see?
Directional Selection
500
Why do organisms that reproduce asexually have no genetic variation?
They are identical to their parents
500
What type of selection is shown above?
Stabilizing selection