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Unifying Principles

Across
Change in charactersitics of living things over time
Theory that says all living things are made up of one or more cells.
DNA is located on __________________.
Maintaining stable internal environment
These do not really fit into the categories of living things or non-living things.
Organisms' characteristics are controlled by genes
The process by which things evolve is ___________ selection.
Down
Chromosomes are located in the ____________ of a cell.
All cells come from ____________________cells.
Genes are located on _____.