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Ch 2 Adaptations over Time

8th grade Ch. 1 Exploring and Classifying
Across
Study of embryos and their development
Structure that does not seem to have a function and may have once functioned in the body of an ancestor.
Model describing the rapid evolution that occurs that occurs when mutation of a few genes results in a species
A type of rock that is most likely to contain fossils and is formed when layers of sand, silt, clay, or mud are cemented and compacted together.
Inherited traits that makes an individual different from other members of the same species and results from a mutation on the organism's genes.
Objects that are similar in structure and origin and can be similar in function.
Down
Element that gives off a steady amount of radiation as it slowly changes to nonradioactive element.
A process by which organisms with traits best suited to their environment are more likely to survive and reproduce; includes concepts of variation, overproduction, and competition.
Group of organisms that share similar characteristics and can reproduce among themselves producing fertile offspring.
Model describing evolution as a slow process by which one species changes into a new species through a continuing series of mutations and variations over time.
Any variation that makes an organism better suited to its environment.
Change in inherited characteristics over time.