Why was the original ""one gene–one enzyme"" hypothesis modified to ""one gene–one polypeptide""?

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The point along a planet's orbit where it is closest to the sun is called the

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.