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Ahypothesis that has been tested again and again , with similar results each time may become a law , true or false

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

Dna in the nucleus carries the genetic code for making proteins in ribosomes. the diagram shows a model of dna. which part of the dna molecule codes for the amino acid sequence in the protein? a) sugar b) phosphate c) deoxyribosed) nitrogen bases