Can RNA have thymine?
Adenine and guanine are found in RNA and DNA in terrestrial life, whereas thymine is only found in DNA and uracil only in RNA.
Which RNA has thymine?
Uracil
Cytosine as CTP also acts as a cofactor to enzymes. It is a compound found in living tissue as a constituent base of RNA. Uracil is the demethylated form of Thymine.
What does RNA have instead of thymine?
In RNA, however, a base called uracil (U) replaces thymine (T) as the complementary nucleotide to adenine (Figure 3).
Is thymine DNA RNA or both?
Both DNA and RNA have four nitrogenous bases each—three of which they share (Cytosine, Adenine, and Guanine) and one that differs between the two (RNA has Uracil while DNA has Thymine).
Why does RNA have uracil and not thymine?
Explanation: DNA uses thymine instead of uracil because thymine has greater resistance to photochemical mutation, making the genetic message more stable. Outside of the nucleus, thymine is quickly destroyed. Uracil is resistant to oxidation and is used in the RNA that must exist outside of the nucleus.
What is adenine thymine?
Adenine (A) is one of four chemical bases in DNA, with the other three being cytosine (C), guanine (G), and thymine (T). Within the DNA molecule, adenine bases located on one strand form chemical bonds with thymine bases on the opposite strand. The sequence of four DNA bases encodes the cell’s genetic instructions.
Is thymine a purine or pyrimidine?
Because of their structural similarity, we usually refer the nine-member double rings adenine and guanine as purines, and six-member single-ring thymine, uracil, and cytosine are pyrimidines.
Is RNA thymine is replaced by?
DNA (top) includes thymine (red); in RNA (bottom), thymine is replaced with uracil (yellow).
Why does RNA use uracil not thymine?
DNA uses thymine instead of uracil because thymine has greater resistance to photochemical mutation, making the genetic message more stable. Outside of the nucleus, thymine is quickly destroyed. Uracil is resistant to oxidation and is used in the RNA that must exist outside of the nucleus.