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How genes produce proteins that determine traits in a simple dominant-recessive relationship.
Eating is a nutritional as well as a social time
The principle of faunal succession uses animal fossils to tell relative time.
Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ...
Accumulation of toxicants over time and up the food chain
The frequency of the dominant and recessive alleles in the gametes of the parental generation determ