Show:
Darwin
Evidence
Evidence 2
Speciation
Fossils & Dating
100

This can be interpreted from studying fossils. 

Evolution 

100
Organisms that have long since passed away, but their remnants (oftentimes in the form of bone) remain in the ground
Fossils
100

Researchers have discovered fossils of tropical trees and ferns in modern-day Greenland and Antarctica. What can be inferred from this evidence?

Both places once had tropical climates 

100
A mountain divides two populations. These populations no longer have contact with each other and evolve into separate species
Geographic Isolation
100
We are currently living in this era. Mammals dominate.
Cenozoic Era
200
Darwin noted how humans would select traits that they desired in a population (ie pigeons, horses, hogs, dogs, etc.). This was called what?
Artificial Selection
200
Animals that are unrelated to each other and live in different parts of the world (ie North America and South America), but live in the same type of climate, evolve very similar features. Darwin referred to this concept as
Geographic Distribution
200

During the Quaternary Period around 2.5 million years ago, large sheets of ice began to appear in the Northern Hemisphere. At this time, mammals like mammoths, rhinos, and bisons were very large and had thick coats of hair. About 10,000 years ago, the climate began to warm up and glaciers started to melt.

How did this change most likely affect Earth’s mammals over time?

Mutate- The large mammals lost their thick coats to survive the warm climate.

200
Two birds may be able to mate with one another, but their mating calls are different. Therefore they will NEVER mate with each other.
Behavioral Isolation
200
The "Cambrian Explosion" happened in this era
Paleozoic
300
Nature selects traits in an individual that helps it to survive. These traits, over time, will become common in a population, essentially "evolving" the species. This is known as what?
Natural Selection
300
Structures that have different mature forms but develop from the same embryonic tissues. (Hint: These provide strong evidence that all four-limbed vertebrates have descended, with modification from common ancestors.)
Homologous Structures
300

A geologist is studying a geologic cross section of rock layers in a national park. The rock layers appear to be well preserved and undisturbed. Which statement best identifies the oldest rock layer in the cross section?

bottom layer 

300
Lions and Tigers are isolated from each other because they can't produce fertile offspring
Reproductive Isolation
300

The dinosaurs lived in this ERA

Mesozoic 

400
Natural Selection ONLY affects the genotype or phenotype of an individual?
Phenotype
400
Organs that no longer serve a purpose but did in the past (Examples: appendix, sexual organs in dandelions, wisdom teeth, hind legs in whales, human tailbone, wings on flightless birds)
Vestigial Organs
400

The random changes (outside of natural selection) in small populations that can adjust and change a population over time

Genetic Drift

400
This type of reproductive isolation occurs when two species are so physically different that the physical process of mating cannot take place
Mechanical Isolation
400

This is the first living organism on the fossil record. 

Bacteria 

500
The ability of an individual to survive and reproduce in its specific environment.
Fitness
500
Many organism will look nearly identical in this stage of development, even though they may not be closely related (ie human and a fish)
Embryo
500

Scientists believe that the Archaeopteryx is an ancestor of modern-day birds. How can the relationship between the Archaeopteryx and modern-day birds be established?

by studying the embryo development, bone structures, behavioral patterns, and molecular biology (DNA)

500
Species A mates in the fall while Species B mates in the spring.
Temporal Isolation
500

A sample is being measured for carbon-14 to determine the age of a chosen rock. What type of dating should be used? 

Absolute which uses radiometric dating