COMMON ANCESTRY
An organism from the past that others came from
What is an Ancestor?
A trait that helps survival
What is Adaptation?
Differences among individuals
What is Variation ?
A characteristic of an organism
What is a trait ?
Organisms with helpful traits survive and reproduce
What is Natural Selection ?
An organism that comes from an ancestor
What is a Descendant?
Surroundings where an organism lives
What is Environment ?
Differences in traits caused by genes
What is Genetic Variation ?
Passing traits from parents to offspring
What is Heredity ?
Something that affects survival
What is Selective Pressure ?
Body parts that look similar because they come from the same ancestor
What is Homologous Structures?
A change in surroundings
What is Environmental Change ?
A change in DNA
What is Mutation ?
A trait passed down from parents
What is inherited trait ?
More offspring are born than can survive
What is overproduction ?
Body parts that have the same function but different origins
What is Analogous Structures?
An action that helps survival
What is Behavioral Adaptation?
Reproduction involving two parents
What is Sexual Reproduction ?
A section of DNA that controls traits
What is a Gene ?
Organisms fighting for resources
What is Competition ?
Preserved remains of organisms from long ago
What is Fossil Record?
An internal body process
Functional Adaptation
Many different types
What is Diversity ?
Different forms of a gene
What is Allele ?
Organisms best suited to the environment survive
What is survival of the fittest ?