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Marysya12 [62]
4 years ago
6

Which one of the following discoveries involving DNA happened first?

Biology
1 answer:
zubka84 [21]4 years ago
5 0
The answer is A.  Erwin Chargaff had discovered years earlier that the percentages of adelnine [A] and thymine [T] bases are almost equal in any sample of DNA.  It became the Charfaff's Rule.  However, no one knew why they did.
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In 1883, Theodor W. Engelmann conducted a classic experiment in which he illuminated a filament of photosynthetic algae with lig
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Answer:

Any body part or behavior that helps an animal survive in its environment is called <u>Instincts</u>

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