Organisms that have either DNA or RNA but never both are known as what?

Question

I can't find the answer to this question anywhere. Please help!!!

Answer 1

virus

Answer 2

With most organisms, the DNA is the central blueprint, and RNA is usually the copy segment carrier.

In analogy, if your computer program calls for a certain activity, the system searches the software for the appropriate applications or subroutines that carry the instructions for what to do next. The RNA makes a copy of the needed segment, though sometimes has its own preset segment that awaits a specific chemical signal to call it into action without ferrying DNA copy splices.

If what you are asking for isn't a virus, then I haven't a clue as to what it possibly could be. Ribosymes are not organisms but chemical units of RNA that can do replication, but that is not all that is needed for the "organism" definition. A slide from someone's presentation ("Characteristics of the molecule of heredity"; Willy Cushwa of Washington State's Clark College) is below. There is a discussion of "Retroviral Transduction" which uses DNA and not RNA for some viral actions, or rather actions by some viral agents. Perhaps you were going down one of these paths?

Answer 3

Every living organism on this planet has DNA to pass on it's genes. RNA is only used temporarilly by the organism, sort of like a worker at a factory. All organisms on earth MUST have DNA.
Viruses, however, may contain RNA as their only means of reproducing, and some may not even use DNA. However, viruses are not considered to be living organisms.

Answer 4

A virus. All other organisms utilize both RNA and DNA. DNA to store genetic information and RNA to transfer a copy of the information to the cellular synthetic apparatus. RNA is also used for several other functions.

Answer 5

Nonexistent.
The answer you're looking for is "virus" but those aren't really organisms.

Answer 6

A virus

Answer 7

lucky