It determines protein structure.
No DNA sequence wont have U (uracil), so it is an RNA sequence!
It is important for cell to copy DNA without making mistake because the DNA contain genetic code in the form of nucleotide base pair sequence, if those sequence get wrong then the DNA code for wrong gene i.e. there will be a mutation which can be lethal or dangerous.
The mRNA base sequence corresponding to the DNA sequence acgtt is ugcaa. The mRNA sequence is complementary to the DNA sequence, with thymine (T) in DNA being replaced by uracil (U) in mRNA.
TACA
If the DNA sequence is ACT, the complimentary mRNA sequence would be UGA
TACA
TACA
TACA
The sequence of the nitrogenous bases, which are the 'rungs' of the DNA 'ladder' are what give DNA its specificity.
A change in the nucleotide sequence of DNA is called a mutation.
A change in the nucleotide sequence of DNA is called a mutation.
A complimentary DNA sequence is the genetic code on the partner strand that aligns with and corresponds to (matches) the code on the primary strand. Each nucleotide has a match, A matches T and C matches G, therefore the complimentary sequence for ATCGA is TAGCT.