How does DNA store information???

Question

10 points!

Answer 1

DNA encodes information as a series of nucleotides. Nucleotides have 4 different bases. Nucleotides are grouped in threes and this is referred to as a Base Triplet Code. Each BTC will determine which amino acid is added to a protein molecule that is being synthesized.

Answer 2

The DNA store information in sequences of nucleotide.

Nucleotides are the basic unit of DNA in which protein synthesis is based. Nucleotides are made up of a phosphate, a deoxyribose sugar (remember, DNA is deoxyribonucleic acid), and a nitrogenous base. There are four nitrogen bases that pair with each other. Purine bases (or fork bases) adenine and guanine pair up with their pyridine bases (socket bases) thymine and cytosine such that adenine pairs ONLY with thymine and guanine ONLY with cytosine.

When protein synthesis occurs, the DNA is split by an RNA polymerase which searches for a region in the DNA called promoters in which transcription begins. Then, the exposed DNA bases pair up with their respective RNA bases to form a messenger RNA (mRNA). In example:

DNA base-mRNA Base
thymine - adenine
adenine - uracil (uracil is the thymine's replacement in RNA)
cytosine -guanine
adenine -uracil
guanine -cytosine
adenine -uracil
cytosine -guanine
thymine -adenine
thymine -adenine
adenine -uracil
cytosine -guanine
thymine -adenine

this mRNA are the "negative" of the nucleic information which is read in 3s. The three-nucleotide "word" is called codon. This info is carried to ribosomal sites of protein synthesis in which the codons are read as certain type of amino acid by a transfer RNA (tRNA) which is connected to the amino acid as the mRNA is read.

thymine - adenine
adenine - uracil
cytosine -guanine
this codon is read as methionine*

adenine -uracil
guanine -cytosine
adenine -uracil
this codon is read as serine

cytosine -guanine
thymine -adenine
thymine -adenine
this codon is read as glutamic acid

adenine -uracil
cytosine -guanine
thymine -adenine
this is a stop codon in which synthesis stops

the amino acids formed then combines to make up a certain protein. When the synthesis reads the stop codon, the amino acids breaks from their tRNA and float away. This is how DNA holds genetic information.
*methionine is known as the start codon

Answer 3

The Dna Store

Answer 4

well, DNA is made up of many nucleotide bases. the order of these nucleotide bases affects the production of certain things in the body (like amino acids) and instructs the body various things. this is how they make sure everything runs smooth in your body. this is where they store all their info.

Genes are segments of DNA. they contain alleles, which are specific codings in a gene. their job is to tell your body how to develop. they are determine your appearance, your traits, your lifespan (probably), what point in time do you reach puberty, etc etc. this is another place where info is stored.

so, actually they don't exactly store info, per se. these patterns of nucleotide bases cause reactions in the body, which is why they sort of seem to be like instructions to do a certain task or process. they trigger these processes. this "set of instructions" ensures things run smoothly and that they go the way things were meant to be. so in a way, we can say that DNA does contain "info".

Answer 5

You have got to be kidding.

This question took a whole semester of college to figure out.