What do codons in DNA code for?

mRNA and then amino acids

Explanation:

Codons are triplets (3) bases that code for defined amino acid sequences.

DNA is transcribed into mRNA. The mRNA codons are then translated into amino acid chains that form proteins.

Each codon codes for an amino acid, which is brought to the growing polypeptide chain by tRNAs via complementary base pairing.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's