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The code for heredity is carried on genes in each organism's DNA. Explanation; Genes are portions of the genome that codes for a protein or an RNA, Hereditary information that is contained in nucleotide sequence of DNA.
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I would say 4. To create a hypothesis, you would need some knowledge about what you're studying. This is where prior knowledge could come in handy.
Answer: could you be more specific what is your question
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