Cladogram
What is a Cladogram?
Its a diagram that shows the evolutionary relation between species.
More complex means..
Younger
What is genetic variation?
The difference of genes/traits among individual in a species
What is Natural Selection?
A process by which organism that are best suited for their environment are able to survive and reproduce
What is evolution?
A process by which species change overtime.
What is a Common Ancestor?
A species from which 2 species evolved.
Less complex means..
Older
The light moth
What is an adaption?
Its a trait that has allowed an organism to better survive in it's environment
What does natural selection lead to?
Evolution
What are branches?
The lines on the diagram that shows closely or far apart a species is from an ancestor.
What are a Homologous structures?
Body parts w/ similar structures found in different species.
If there is no genetic variation what happens?
It leads to extinction
What are Acquired Traits?
Traits that are developed can't be passed down because they're not coded for in DNA
The environment is colorful. There is a dark and white moth. Which moth will most likely survive?
The white moth because it has a better chance of survival and is more best fit than the dark moth in the colorful environment.
If a branch goes off the diagram that means..
The specie went extinct
What are transitional fossils?
They are fossils which have both the traits of an older group of organisms and a modern day group of organisms.
What are the 2 main sources of variation?
Mutations and Sexual Reproduction
What comes first Evolution or Natural Selection?
Natural Selection
The environment is a white plant. There are 14 dark and 12 light ants. What will happen overtime? Which ant will go extinct?
The ant best fit for its environment will be able to survive and reproduce. The dark ant will go extinct.
What are the two names cladograms are also called?
Evoulutionary and Phylogenetic trees
Fossil Evidence helps..
Identify which fossils are older and younger
Why does Natural Selection require variation?
There must be variation within the population that allows some individuals to be better suited for the environment.
What are 3 process parts does natural selection have?
Variation Overproduction Competition
How does Natural Selection work together with evolution?
Organism that are best fit for the environment survive and reproduce which leads to the evolution of species with that advantage traits overtime.