Charles Darwin joined the crew of this ship and set sail from England in 1831.
What is the H.M.S. Beagle?
100
During the beak lab what represented the different adapations?
Different types of utencils use for beaks?
100
This is when scientists find fossils in similar enviroments but in different parts of Earth
What is geographic distribution of living species?
100
Mutations and gene shuffling as a result of sexual reproduction are the two main sources of this phenomena.
What is genetic variation?
100
Changes can lead to the formation of a new species.
What is speciation?
200
Charles Darwin made many observations and collected what would become evidence of Evolution on these islands west of Ecuador.
What are the Galapagos Islands?
200
Members of each species that fight for food, territory is called?
What is compeition?
200
This phrase means "how are living things spread out over the world."
What is the geographic distribution of living species?
200
This is not a swimming pool filled with Levi's. This is a collection of all the genes that are present in a population.
What is a gene pool?
200
As new species evolve there are isolating mechanisms that prevent populations from making babies. If two populations can no longer produce fertile offspring, this has occurred.
What is reproductive isolation?
300
These preserved remains of ancient organisms show the history of life on Earth.
What is the fossil record or what are fossils?
300
Who has the ability to survive and reproduce are the _____.
What fittest?
300
Another way scientists have evidence of evolution is by comparing orgainisms what?
What are skeletal stucutres?
300
When we look at all the different alleles that occur in a gene pool we compare our findings to the other alleles for the same gene. This number is usually presented as a percentage.
What is relative frequency?
300
This type of isolation is the result of species acting differently. For example some song birds are physically capable of interbreeding but they do not because they have differences in courtship rituals such as different mating songs.
What is behavioral isolation?
400
The turtles and finches Darwin studied had different adapations base on each island because why.
Had a different Food source?
400
Each living species that has descended and changed over time and adapted is called?
What is evolution?
400
Another way scientists have evidence of evolution when they study orgainisms that are preserved in sedimentary rock are called?
Fossils?
400
A one gene trait like a Widow's Peak or an attached ear lobe.
What is a single-gene trait?
400
Sometimes two populations can be separated by a physical barrier such as a river, ocean, mountain range, or canyon.
What is geographic isolation?
500
This is a group of the same species that live in a specific geographic area
What is a population?
500
Over time of evolution this causes changes in the inherited characteristics of a population and the strogest in each population surivive and reproduce is called?
What is natural selection?
500
Each individual in a population has slightly different traits is called?
What is genetic variation?
500
Some traits are controlled by two or more genes like height and skin color.
What are polygenic traits?
500
This is when similar species cannot reproduce because they mate at different times.