Early Study of Evolution
Who developed the first attempt at a scientific theory of evolution?
Jean-Baptiste Lamark
The natural process by which something takes place?
Mechanism
How well an organism can survive and reproduce in its environment.
Fitness
documents the diversity of the life forms, many now extinct, and shows how life forms existed and changed throughout earth's history.
fossil record
DNA is a complex ____.
Molecule
This the struggle among living things to get the necessary amount of food, water, and shelter.
Competition
This is an inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment.
Adaptation
The process by which 2 species evolve in response to changes in each other over time.
Coevolution
preserved remains of an organisms or traces of living remain
Fossils
The part of a habitat that are alive, or once was alive
Biotic
The color of a squirrel's color, or the shape of a bird's beak are examples of what?
Adaptations
To get a new variation in the species there must be a __________________
Gene Mutation
The natural selection that acts on an organism's ability to get the best possible mate and blend their genes
Sexual Selection
Organisms that reproduce sexually, pass on genes with greater, what?
Genetic Variation
When one cell engulfs another or when bacteria share their DNA with other cells
transfer
A group of similar organisms that can mate with each other and produce offspring
Species
Process by which individuals that are better adapted to their environment are more likely to survive
Natural Selection
Besides mutation, what is the other source of new alleles entering into a population?
Gene Flow
Body Fossils, Trace Fossils
Genes code for different _____________________
proteins
The differences between individuals of the same species
Variation
The struggle among living things to get the necessary amount of food, water, and shelter
Competition
The process where by random chance, the genetic variation of a population shrinks
Genetic Drift
Similar structures that related species have inherited from a common ancestor
Homologous Structures
When two organisms of different species live with each other
Symbiosis