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https://www.khanacademy.org/science/high-school-biology/hs-m...
Also here, the three sections starting with “DNA as the genetic material”:
https://www.khanacademy.org/science/biology
An introductory biology textbook would be good too. Any AP biology textbook should cover it all.
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https://www.khanacademy.org/science/high-school-biology/hs-m...
Also here, the three sections starting with “DNA as the genetic material”:
https://www.khanacademy.org/science/biology
An introductory biology textbook would be good too. Any AP biology textbook should cover it all.