# data[].attributes.body
Period 4

# data[].attributes.body
Is a hypothesis that the development of the embryo of an different animals all resemble each other.

# data[].attributes.body
Differences in molecular similar (usually proteins) . Used to explain patterns in evolution.

# data[].attributes.body
Structures in some organisms that seem to have no use, but are useful in other species

# data[].attributes.body
Parts that are similar in structure but have different uses depending on the species

# data[].attributes.body
Certain Genes disappear as individuals die or do not reproduce

# data[].attributes.body
natural selection that come through preference by one sex for certain characteristics in individuals of the other sex.

# data[].attributes.body
Charles Darwin created the idea that nature is the Survival of the Fittest or organism most adapted to the environment.
Darwin's Theory
1) mechanism by which evolution takes place is natural selection
2) diverse groups of animals evolve from one or a few common ancestors

# data[].attributes.headline
Divergent, Parallel, and Convergent Evolution

# data[].attributes.subject
Divergent, Parallel, and Convergent Evolution

# data[].attributes.body
Migration: population moves over time
Gene Flow: transfer of genetic variation from one population to another

# data[].attributes.body
Change in the structure of a gene resulting in a difference

# data[].attributes.body
Variation: Genetic Mutations that occur
Inheritance:DNA & Sexual Selection determine the traits a species has
Selection:Selection & Genetic Drift determine what traits will die off
Time:Migration allows for movement and diversity