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small units of DNA that contain hereditary information that is passed from one generation to the next (inherited).
a series of numbers that represents the types and arrangement of the teeth of a mammal.
the body system concerned with the digestion and absorption of nutrients.
secretory tissue in the leaves of plants that secretes water through pores in the epidermis or...
dietary supplements of live bacteria that are good for human health.
a small finger-like projection found on the inner folds of the small intestine, which increases...