What does uracil pair up with

It turns out that when the G and T bases change shape, they make themselves more energy efficient—still less efficient than a normal base pair, but efficient enough. Uracil is energetically less expensive to produce than thymine, which may account for its use in RNA. In DNA, however, uracil is readily produced by chemical degradation of cytosine, so having thymine as the normal base makes detection and repair of such incipient mutations more efficient. 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. RNA contains the unmethylated form of the base thymine called uracil U Figure 6 , which gives the nucleotide uridine. For this reason, structure RNA molecules in a double helix are much more stable.

Both uracil and thymine pair with cytosine. Thymine in dna, and uracil in rna. In DNA, thymine. In RNA, Uracil. Type your answer here.. Adenines base pair in RNA is uracil. Adenine and Thymine make up one pair and Cytosine and Guanine make up the other pair.

Uracil pairs with Adenine in RNA. Log in. See Answer. Best Answer. Study guides. Q: Uracil will pair with Write your answer Related questions. Which nitrogenous base does uracil pair with in RNA? What does uracil pair with in the genetic code? The distance 3. DNA is a double-stranded molecule, with rungs connecting the two strands. Each rung of the DNA ladder is actually a pair of bases that meet in the middle: a base pair. But each base is always only paired with one specific other base.

The five bases are broken up into two groups based on their structure. The pyrimidine bases are made up of a single ring of atoms and include cytosine, thymine and uracil. The purine bases have a double ring of atoms and include adenine and guanine. They are called nitrogenous bases as they contain nitrogen and carbon atoms in the ring s.

Within the cell, the bases are paired to make DNA molecules and also during certain processes, such as DNA replication and protein synthesis.