Show:
Evidence For Evolution
Paleontology
Geology
Fossil Dating
Definitions
100
structures with no current function
What are vestigial structures?
100
A trace of an organism that existed in the past?
What is a fossil?
100
Law that states that any undisturbed sequence of strata, the oldest layer is at the bottom and the youngest is at the top
What is the law of superposition?
100
The amount of time it takes for half the parent atoms to decay to daughter atoms
What is a half life?
100
This is the study of fossils
What is paleontology?
200
A bat wing, human hand, and whale fin are all examples of this type of comparative anatomy
What is homologous structures (homology)
200
Process of changing the hard parts of the remains of an animal or plant with minerals?
What is permineralization or mineralization.
200
Law that states that if one rock body contains fragments of another rock body it must be younger than the fragments of rock
What is the law of inclusions?
200
How any half lives have gone by when there is 75% daughter atoms and 25% parent atoms?
What is 2?
200
Fossils that are useful for dating because they are common, easy to identify, and existed for a brief time
What is an index fossil?
300
Flippers of a penguin, porpoise, and shark which all have the same function but different anatomy are called this
What are analogous structures?
300
A permineralized piece of wood?
What is petrified?
300
A crack in a rock
What is a fracture?
300
If the half life of K-40:A-40 is 1.4 billion years, how old is a piece of zircon found to have a ratio of parent to daughter cells of 1:1?
1.4 billion years old
300
Study of the distribution of organisms around the world
What is biogeography?
400
Human intervention to choose and mate animals with specific traits
What is artificial selection?
400
This fossil of this marsupial lion was discovered in a cave in Australia.
What is Thylacoleo
400
This is the type of rock in which fossils most easily form
What is sedimentary rock?
400
If the half life of U-238: Pb-206 is 4.5 billion years, how old is a fossil that has a parent to daughter ratio of 3:1?
What is 1.8 billion years?
400
Structures that share characteristics and came from a common ancestor, but are used for different purposes
What are homologous structures?
500
Evolving due to drastically changing environment over short period of time because of human activities
What is industrial melanism
500
What was the importance of the bones in the marsupial lions tail?
It could rest on its tail to stand up on two legs.
500
Near what geographic feature would a fossil most likely form?
any body of water
500
The half life of C-14: N-14 is 5700 years, if there are 250 molecules of C-14 and 750 molecules of N-14, how old is the fossil?
What is 11400 years old.
500
Method of comparing developmental stages of an organism to determine the evolutionary relationship of the organisms
What is embryology?