One hypothesis for the origin of life proposes that RNA evolved prior to the appearance of the first living organism. According to this hypothesis, RNA served as the genetic storage molecule and directed the translation of proteins in the earliest living organisms. This hypothesis also suggests that DNA evolved from RNA late in the early history of life.
Genetic studies have shown that distantly related species have different DNA replication machinery from one another, but they share similar protein translation machinery.
Does the hypothesis explain the results of these studies?
A.
Yes, because if RNA evolved early in life's history, protein translation machinery could have evolved separately in different lineages.
B.
Yes, because if DNA evolved late in life's history, DNA replication machinery could have evolved separately in different lineages.
C.
No, because if DNA evolved late in life's history, DNA replication machinery should have been present in the earliest living organisms.
D.
No, because if RNA evolved early in life's history, protein translation machinery should have been present in the earliest living organisms.