Suppose you are provided with an actively dividing culture of coli bacteria to which radioactive thymine has been added. What would happen if a cell replicates once in the presence of this radioactive base? All four bases of the DNA would be radioactive. O Radioactive thymine would pair with nonradioactive guanine. DNA in both daughter cells would be radioactive. One of the daughter cells, but not the other, would have radioactive DNA. Neither of the two daughter cells would be radioactive. Which position(s) in the codon, if changed to different nucleotide(s), would be most likely to cause a change in the amino acid encoded? Choose the best answer. O third nucleotide of the codon only first nucleotide of the codon only second nucleotide of the codon only Either the first or second nucleotide of the codon. O any nucleotide of the codon.