«Scientists have found that one way to identify these regions is to compare the genomic sequences of multiple related species and to search for regions of the genomes that contain the same or similar strings of letters — nucleotides — even though those parts of the genomes do not
encode instructions for making proteins.»
It is typically less expensive to get preselected information about the 20,000 or so genes that make up a person's exome — the section of the genome that
provides instructions for making proteins — than to perform a more precision - oriented test that targets a single gene.
In short, when antisense RNA matches up with and binds to messenger RNA (mRNA), or to a precursor strand called pre-mRNA, it stops the latter from conveying
the instructions for making proteins.
Genes are made of DNA, which contains
the instructions for making proteins.
All life forms on Earth use the same genetic alphabet of the bases A, T, C, and G — nitrogen - containing compounds that constitute the building blocks of DNA and spell out
the instructions for making proteins.
DNA and genes — which house
the instructions for making proteins — are stored within the nucleus of each cell.
mRNA molecules contain
the instructions for making proteins — the number of mRNAs from a given gene is a measure of the level of expression of that gene.
But the Alu RNA doesn't contain
the instructions for making a protein.
In general, RNAs are the cell's
instructions for making proteins, as delivered as messengers from each particular gene.
So, DNA contains
the instructions for making a protein.