Examlex
Compare and contrast the concepts of test reliability and test validity.
Bilaterian Ancestor
An early animal that is the common ancestor of two major groups of living organisms, characterized by bilateral symmetry.
Nervous System
The complex network of nerves and cells that transmits signals between different parts of the body, enabling organisms to respond to internal and external stimuli.
Cnidarians
A phylum of aquatic invertebrates known for their distinct body structure featuring a jelly-like substance and stinging cells, including jellyfish and corals.
Crystallin Genes
Genes that encode for crystallin proteins, which play a crucial role in the transparency and refractive properties of the eye lens.
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