Evolution 1
An increased rate caused by human activity.
When scientists discuss the Sixth Extinction, they are referring to which pattern?
Preserved remains of ancient organisms
Fossils
Proposed the theory of evolution by natural selection
Charles Darwin
Extinction
When an organism dies because it does not have a mutation allowing it to adapt to the environment.
Natural Selection
Another term for Natural Selection
Survival of the Fittest
Evolution by natural selection
When more and more bacteria become resistant to antibiotics?
States that the oldest rock layers are on the bottom, youngest on the top
Law of Superposition
Hornless cows having horned offsrping .
What could describe a mutation in a population?
This is what sickle cell mutation affects .
What is the structure and function of a red blood cells?
Over time, this has increased and decreased.
What is the rate of extinctions?
A group of simliar organisms that can have offspring together
Species
This is what normally changes when organisms must adapt to survive.
What is their environment?
Whale embryos have hind limbs.
What is evidence that whales evolved from land mammals?
The green moth coloring makes them better adapted than the brown moths.
What causes green moths to survive better in a large pine forest with bird predators than brown moths?
Both the green and brown moth population remain relatively equal.
An equal number of green & brown moths are introduced to a forest that has bats as predators what will happen?
A student wonders if studying longer leads to better test scores. She studies for different amounts of time before each quiz and records her scores.
What is the independent variable?
What is the dependent variable?
IV: Time studying
DV: Her scores
A pelican is born with a larger bill than other pelicans and its offspring also has larger bills which is caused by this.
What are mutations
All the fossils throughout the history of Earth
The fossil record
The mutation that results in the sickle cell trait .
This is helpful in some environments and harmful in others.
Fossils,living organisms, embryos.
Which provide evidence for evolutionary relationships?
Randomly occurring mutations.
What causes variation in an inheritable trait in a population?
What changes did Darwin observe in finches in the Galapagos
Beaks
A female giraffe with a short neck is having difficulty reaching leaves in taller trees, this is possible.
What is she eats leaves from shorter trees and her offspring with longer necks survive.
The change in moth color occurred by chance due to a mutation.
What causes brown moths, that are offspring of green moths in a large pine forest that has bird predators?