What is the relationship between the sequence of bases in DNA and the sequence of amino acids in proteins?

Expert Answers

An illustration of the letter 'A' in a speech bubbles

DNA is a double-stranded macromolecule that serves as an instruction set for making all of the proteins that can be made by a cell. The instructions are determined by the sequence of the nitrogenous bases (adenine-A, thymine-T, cytosine-C, and guanine-G). The DNA has two strands:  a sense strand and a template strand. The sense strand is typically the one drawn on top, going 5' to 3'. The template strand is typically drawn on the bottom, in the 3' to 5' direction. It serves as the template for RNA polymerase during the process of transcription.

Transcription occurs in the nucleus of a eukaryotic cell and is the copying of the DNA into an mRNA message that can go to the ribosome to make a protein. In eukaryotes, the DNA cannot leave the nucleus so a messenger is...

(The entire section contains 417 words.)

Unlock This Answer Now

Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.

Start your 48-Hour Free Trial
Approved by eNotes Editorial Team