Thymine (cell transcription)?

Question

Do tRNA use thymine or uracil?

(when going from mRNA to tRNA)

best answer = 10pts!

Answer 1

uracil, RNA doesn't have thymine only DNA does

Answer 2

Thymine, also known as 5-methyluracil, is a pyrimidine nucleobase. As the name implies, thymine may be derived by methylation of uracil at the 5th carbon. Thymine is found in the nucleic acid DNA. In RNA thymine is replaced with uracil in most cases. In DNA, thymine(T) binds to adenine (A) via two hydrogen bonds to assist in stabilizing the nucleic acid structures.

Thymine combined with deoxyribose creates the nucleoside deoxythymidine, which is synonymous with the term thymidine. Thymidine can be phosphorylated with one, two or three phosphoric acid groups, creating respectively TMP, TDP or TTP (thymidine mono- di- or triphosphate).

One of the common mutations of DNA involves two adjacent thymines or cytosine, which in presence of ultraviolet light may form thymine dimers, causing "kinks" in the DNA molecule that inhibit normal function.

Answer 3

uracil

Note: all kinds of RNA have uracil in place of thymine.

I teach my students to pair up the DNA bases by putting letters with straight lines together, AT, and by pairing letters with curves together, CG. But RNA says AU (like the AAAAWW you say when you see a puppy.)