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Answer:
One strand of all the isolated DNA double helices would have C-14 labeled thymidine.
Explanation:
DNA replication is a semiconservative process which means that each newly formed DNA double helix contains one parental strand and one newly formed strand.
Since the medium has thymidine labeled with C-14, all the newly formed strands formed during DNA replication would have radio-labeled thymidine.
Therefore, by the end of 20 minutes, one out of two strands on each double helix would have labeled thymidine nucleotides.
A process that a cell does not use to maintain homeostasis would be A. Taking in waste. This is because by doing so, the organism would posses indigestible, and excess content not needed and thus may change internal conditions for vital reactions to occur.
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Explanation: