MRNA is a single-stranded molecule that carries genetic code from DNA in a cell's nucleus to ribosomes, the cell's protein-making machinery.
Answer: <em>Punctuated equilibrium is the hypothesis that evolution occurs at an irregular rate through geologic time. </em>
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Sensory nerve endings in the fingers include Meisnner's corpuscles, Pacinian corpuscles, free nerve endings, Merkel discs, and Ruffini endings.
