Answer:
The genes for all organisms are composed of the same building blocks.
Explanation:
Anaxyrus, woodhousii. From what I remember
Adenine (A) binds with Thymine (T).
<span>Guanine (G) binds with Cytosine (C).
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Adenine and Guanine are purines. Thymine and Cytosine are pyrimidines.
Hope this helps !
Photon
C is most likely your answer (my bad if I am wrong)
So the question is asking to choose among the following choices that state the question that HMS Beagle ask, and on my further research about the said question, I would say that the answer would be "Do living organisms change over time and, if so, how?". I hope this would help
