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Change Over Time and Classifications

Across
Diagram that links groups of organisms by showing how evolutionary lines, or lineages branched off from common ancestors.
Preserved remains of ancient organisms, resembled.
Process by which individuals that are better adapted to their environment are more likely to survive and reproduce than other members of the same species.
Difference between individuals.
States that allele frequencies will remain constant or have genetic equilibrium, unless factors cause those frequencies to change.
The process of change over time.
Species produce more offspring than one can survive.
Scientist who studies fossils or the preserved remains or traces of organisms that have lived in the past.
Consists of all genes, including all the different alleles, that are present in a population.
Down
Group of species that includes a single common ancestor and all descendants of that ancestor.
Charge in genetic material of cell.
Age of fossils is determined by comparing its placement with that of fossils in other layers of rock.
Study of how living and extinct organisms are related to one another.
A trait that helps an organism survive and reproduce.
Involves measuring the amounts of radioactive isotopes in a sample to determine its actual age.
Trait that arose in the most recent common ancestor of a particular lineage and passed to its descendants.
Collections of fossils organized to provide evidence about history of life on Earth, including how organisms have changed over time.