It depends what you mean by double stranded.
If you mean two separate RNA strands, perfectly complementary to one another and existing as a basepaired structure in the cytoplasm, then no. Double stranded RNA like that only occurs in some types of viruses (and cells infected by them... so I guess the cytoplasm of a cell infected by a double stranded virus might have a lot of this kind of double stranded RNA).
However, if you mean double stranded in the sense of a single RNA molecule folding back on itself and basepairing with itself - forming stem loops and more complicated structures - that kind of RNA double-strandedness is extremely common. All tRNA's and rRNA's for example exhibit this kind of double-strandedness. Nucleic acids are unstable in single stranded states and will spontaneously fold back on themselves if there is no other strand to basepair with.
Nucleic acids are inherently unstable in a single stranded state. Thus,
Gold is found in the solid state.
Sue the dinosaur fossil was found in the state of South Dakota
Menthol is found in a solid state at 25 degrees Celsius.
Tantalum doesn't exist in pure state in nature.
Hydrocarbons can be found in all states of matter.
In a strict sense no. mRNA always consists of a single RNA strand. In another sense, yes. Nuclei acids are inherently unstable in a single stranded state - the nitrogenous bases will spontaneously basepair with any nucleotides they encounter. As a result, most RNAs will spontaneously fold back on themselves, the single RNA strand basepairing with other regions of itself. That said, because the sequence will never be perfectly complementary, it's unlikely that much of the mRNA will be double stranded, but it will probably have a few segments with a double stranded character.
Becalmed
There are three main differences between RNA and DNA: The sugar in RNA is ribose instead of deoxyribose, RNA is generally single-stranded, and RNA contains uracil in place of thymine.
state the principles of double entry
In irons, or stalled, depending on the last known direction of the wind.
The state motto of California is "I have found it"
Gold is found in the solid state.
Which state in Nigeria can woodland be found
what state was the revolutionary war found <what the that's the no answer
the state of matter found in stars is plasma.
where is the California s state mineral found
Kansas in found in the word Arkansas.