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Natural Selection

Across
species go extinct and new ones evolve through Natural Selection
Found on the X axis of a graph
Darwin's ship
The gene makeup on a chromosome
Source of common genes contained by related but different species
Down
The thing being measured during an experiment; the data.
A specific characteristic of an organism
Slight differences in inherited traits among members of a species
involves the reproduction of organisms best suited to their environment in greater numbers than the reproduction of less well-suited organisms.
Physical appearance or expression of a trait
a permanent change in the sequence of DNA, or the nucleotides, in a gene or a chromosome.
The part of an experiment that shows what happens when the independent variable isn’t changed.