Which of the following statements about the genetic code is true? a) Most organisms alive today...

Which of the following statements about the genetic code is true?

a) Most organisms alive today use the same genetic code. The few exceptions show minor deviations from the "universal" genetic code. This is evidence that all organisms descend from multiple ancestral organisms.
b) Most organisms alive today use the same genetic code. The few exceptions show minor deviations from the "universal" genetic code. This is evidence that all organisms descend from a single ancestral organism.
c) Most organisms alive today use the same genetic code. The few exceptions show minor deviations from the "universal" genetic code. This is evidence that organisms have not evolved.
d) Most organisms alive today use widely different genetic codes. This is evidence that all organisms descend from multiple ancestral organisms.
e) Most organisms alive today use widely different genetic codes. This is evidence that organisms have evolved over time.

Expert Solution

genetic code is universal that is most of the organisms use the same genetic code but there are few exceptions example in mycoplasmas UGA codes for tryptophan, UGA is a stop codon. universal genetic code shows that organisms descend from a common ancestor so the answer is b) Most organisms alive today use the same genetic code. The few exceptions show minor deviations from the "universal" genetic code. This is evidence that all organisms descend from a single ancestral organism.

gladiator answered 2 years ago

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