Ag Bio Evolution Review

Early Earth

100

The disappearance and lack of reappearance of over 80% of organisms illustrated in the fossil records is evidence of what? 

Mass Extinction

200

Scientist measure the amount if radioactive isotopes and determine the specific age of fossils using the ___________ dating method.

Absolute

300

When an oceanic plate collides with a continental plate and pushes under the continental plate this area is called the ____________ zone.

Subduction

400

Scientist can identify the order in which rock units form using which dating method?

Relative Dating or Law of Superposition

500

The portions of the Earths crust the moves slowly over the mantel is called__________________.

Tectonic Plates

Evidence of Evolution

100

Structures that have a similar evolutionary origin and structure but are adapted for different purposes such as a whale fin and human arm are called _____________ structures. 

Homologous

200

This adaptation allow some organism to look like others for their protection or safety.

Mimicry 

300

Structures with similar function but not related origin like the wings of a bird and the wings of an insect are called _______ structures. 

Analogous 

400

The process by which one species diverges and produces one or more new species is called what?

Speciation

500

Two organisms are the same species of they can mate and produce _________ offspring.

Fertile

Natural Selection

100

This type of Natural Selection favors average individuals.

Stabilizing Selection 

200

This type of natural selection favors one extreme of the population.

Directional Selection

300

This type of selection favors both extremes of a population.

Disruptive selection

400

Scientist Charles Darwin spent a lot of time studying life on this  Island.

Galapagos

500

This type of evolutionary change can either produce beneficial or harmful traits in a population.

Mutations

You need to know this

100

The supercontinent that existed 300 millions years ago was called what?

Pangea

200

This type of population is least likely to be devastated by a disease outbreak.  

large, generically different population

300

If a group of organisms leave a larger population due to emigration and never return, which mechanism of evolution may be display?

Gene Flow

400

In genetic drift the allelic frequency changes because of what?

Chance events

500

According to scientist the earth is approximately how old?

4.6 billion years