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An Overview of DNA Functions

By: Ian Murnaghan BSc (hons), MSc - Updated: 13 Jan 2020 | comments*Discuss
 
Dna Replication Coding Proteins Overview

The functions of DNA are vital for inheritance, coding for proteins and the genetic blueprint of life. Given the enormity of DNA's functions in the human body and its responsibility for the growth and maintenance of life, it is not surprising that the discovery of DNA has led to such a great number of developments in treating disease. DNA holds the instructions for an organism's development and reproduction - ultimately, its survival.

Coding for Proteins

DNA holds the code for proteins, which are complex molecules that do huge amounts of work around our body. Information in DNA is initially 'read' and then it is transcribed into a messenger molecule. After, the information held in this messenger molecule is translated into a 'language' that the body can understand. This language is one of amino acids, which are also known as the building blocks of proteins. It is this specific language that dictates how the amino acids should produce a particular protein. If you think about the twenty different kinds of amino acids, you can see that the ordering can produce an enormous variety of proteins.

DNA Replication

DNA replication is vital for a virtually endless list of functions, from reproduction to maintenance and growth of cells, tissues and body systems. To copy itself, a DNA molecule essentially 'unzips,' thus resulting in a series of bases without pairs along the backbone of the molecule. DNA has four bases - all part of a nucleotide that also consists of a sugar and phosphate. The four bases in DNA are very specific about which base they will attach to, which means that adenine only pairs with thymine and guanine will only pair with cytosine. As the nucleotides connect with unpaired bases on the backbone of the DNA molecule, they build a new strand that complements - or matches - the original sequence. The end result is a strand that is a perfect match to the original one prior to it unzipping.

Cells in your body replicate for purposes such as making new skin or blood cells. When mistakes occur, there are repair systems in place to remedy the mistake or alternately, a cell has a marker for destruction. If a cell survives a mutation, there are still benefits to an organism. In fact, this concept is essentially the basis for evolution.

Genetic Code

DNA is important in terms of our genetic code, in the sense that it transfers genetic messages to all of the cells in your body. If you think about DNA in a reproductive sense, consider that the joining of an egg and sperm to create your first cell provided your completed genetic code that your body would use for all of your life. Within that initial cell, half of your chromosomes - containing your DNA - came from your father and half came from your mother.

DNA clearly plays important roles in the human body and is one of the most significant discoveries of the twentieth century. Our continued research and knowledge of DNA functions will likely help us to learn even more about this important molecule.

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I hate Abraham Lincoln I was fine with my Slaves, they would do everything for me and now they are all released, we should kill all slaves like we killed all Jews!!!
Slave Owner - 13-Jan-20 @ 10:13 PM
According to all known laws of aviation, there is no way a bee should be able to fly. Its wings are too small to get its fat little body off the ground. The bee, of course, flies anyway because bees don't care what humans think is impossible. Yellow, black. Yellow, black. Yellow, black. Yellow, black. Ooh, black and yellow! Let's shake it up a little. Barry! Breakfast is ready! Ooming! Hang on a second. Hello? - Barry? - Adam? - Oan you believe this is happening? - I can't. I'll pick you up. Looking sharp. Use the stairs. Your father paid good money for those. Sorry. I'm excited. Here's the graduate. We're very proud of you, son. A perfect report card, all B's. Very proud. Ma! I got a thing going here. - You got lint on your fuzz. - Ow! That's me! - Wave to us! We'll be in row 118,000. - Bye! Barry, I told you, stop flying in the house! - Hey, Adam. - Hey, Barry. - Is that fuzz gel? - A little. Special day, graduation. Never thought I'd make it. Three days grade school, three days high school. Those were awkward. Three days college. I'm glad I took a day and hitchhiked around the hive. You did come back different. - Hi, Barry. - Artie, growing a mustache? Looks good. - Hear about Frankie? - Yeah. - You going to the funeral? - No, I'm not going. Everybody knows, sting someone, you die. Don't waste it on a squirrel. Such a hothead. I guess he could have just gotten out of the way. I love this incorporating an amusement park into our day. That's why we don't need vacations. Boy, quite a bit of pomp... under the circumstances. - Well, Adam, today we are men. - We are! - Bee-men. - Amen! Hallelujah! Students, faculty, distinguished bees, please welcome Dean Buzzwell. Welcome, New Hive Oity graduating class of... ...9:15. That concludes our ceremonies. And begins your career at Honex Industries! Will we pick ourjob today? I heard it's just orientation. Heads up! Here we go. Keep your hands and antennas inside the tram at all times. - Wonder what it'll be like? - A little scary. Welcome to Honex, a division of Honesco and a part of the Hexagon Group. This is it! Wow. Wow. We know that you, as a bee, have worked your whole life to get to the point where you can work for your whole life. Honey begins when our valiant Pollen Jocks bring the nectar to the hive. Our top-secret formula is automatically color-corrected, scent-adjusted and bubble-contoured into this soothing sweet syrup with its distinctive golden glow you know as... Honey! - That girl was hot. - She's my cousin! - She is? - Yes, we're all cousins. - Right. You're right. - At Honex, we constantly strive to improve every aspect of bee existence. These bees are stress-testing a new helmet technology. - What do you think he makes? - Not enough. Here we have our latest advancement, the Krelman. - What does that do? - Oatches that little strand of honey that hangs after you pour it. Saves us millions. Oan anyone work on the Krelman? Of course. Most bee jobs are small ones. But b
Barry - 25-Nov-19 @ 7:21 PM
one day Joe was wih kyle and joe gave kyle head, kyle killed himself because joe bit weewee too hard. The end
joe - 13-Nov-19 @ 7:18 PM
I remember one day I was alone in my house full of people. It was completely silent in my very loud house. I have been diagnosed with the inability to smell properly, probably why my ears don't work. That's when I found out my step uncle had a crush on me. I wondered why every time I would bend over to put my shoes on he was there, he usually said "I am checking up on you" with a deep smile. Also, I live on the street.
HELLTHYBYER - 13-Nov-19 @ 7:13 PM
some on took my pickkles out of my pond. they where ok untill some fat guy took them. help me get by pickkles back in to the pond. $5million reworad
iamthepickkleman - 28-Oct-19 @ 4:08 AM
Why my DNA not give me pro gamer moves and big brain times?
_xXFortnite GamerXx_ - 15-Oct-19 @ 5:33 PM
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Morgz - 26-Mar-19 @ 2:14 PM
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yoda gaming - 19-Mar-19 @ 12:39 PM
Ya this article is very important and proved helpful for me thank you so much for it. I just love biology ???? I too listen bta songs......esp DNA. Ba byeee....... Your mate....,, Selena
Selena - 4-Mar-19 @ 4:24 AM
So every night my dad beats me. He takes off his belt and starts to whip me like a slave. Last night I dropped the beer bottle and he pulled out his glock and shot my right knee. Every night I feel it in my left leg all of my friends that I have lost only to feel the pain.
Help - 6-Feb-19 @ 7:05 PM
I think that i should by some zebra yeezys ever since the restock they are around 220 dollars new but on the other hand the triple white yeezy 350s are only 175 on the goat app.Gimme your thoughts on what yeezys i should by.
macs - 31-Jan-19 @ 6:34 PM
So DNA is in our blood vessels right? That’s what it says in BTS songs called DNA
Taetae - 10-Jan-19 @ 8:06 PM
All known cellular life and some viruses contain DNA. The main role of DNA in the cell is the long-term storage of information.
Alonzo Perez - 29-Nov-18 @ 3:50 PM
Its good to know how the study of DNA has led to further advancements in medicine and human survival.
DLRivers - 29-Nov-18 @ 3:45 PM
it is a good web site to learn about DNA
Mclovin - 29-Nov-18 @ 3:45 PM
the article was very interesting because i learned how DNA works and how it functions and helps us in our lives
david - 29-Nov-18 @ 3:44 PM
This article is very in-depth and provides vital information for those who are not familiar with how DNA is structured and how it was discovered.
Cyn - 28-Nov-18 @ 4:44 PM
What i learned abou this lesson was that DNA i influential because DNA means an Deoxyribonucleic acid which is a molecule composed of two chains that coil around each other to form a double helix carrying the genetic.
Yaniiip - 28-Nov-18 @ 4:17 PM
I learned that DNA has been crystallized
Sadie - 28-Nov-18 @ 4:12 PM
it really helped a lot with the questions i had.
jakie wakie - 28-Nov-18 @ 4:12 PM
The DNA image is a very cool looking thing
Mike - 28-Nov-18 @ 4:10 PM
this is very interesting it taught me a lot
david - 28-Nov-18 @ 4:09 PM
DNA holds the code for proteins, which are complex molecules that do huge amounts of work around our body
Mclvoin - 28-Nov-18 @ 4:07 PM
DNA in the body also contains Nucleosides and nucleotides in Which both contains purine and pyridine that are complex compound containing a nitrogenous base like adenine,thymine,quanine,and cytosine which are constituents of nucleic acids For the protein building blocks.
Cesar - 28-Nov-18 @ 4:07 PM
The functions of DNA are vital for inheritance, coding for proteins and the genetic blueprint of life. Given the enormity of DNA's functions in the human body and its responsibility for the growth and maintenance of life, it is not surprising that the discovery of DNA has led to such a great number of developments in treating disease. DNA holds the instructions for an organism's development and reproduction - ultimately, its survival.
Ben - 28-Nov-18 @ 4:04 PM
Ben shapiro ebic liberal destroyer
Bobby Schmuda - 14-Nov-18 @ 7:20 PM
DNA determines what characteristics are given to your offsprings
Caleb - 5-Nov-18 @ 1:33 PM
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Ben Shapiro - 30-Oct-18 @ 1:32 PM
wOw... The DNA is a very important part of the genetic code!
Kade - 30-Oct-18 @ 1:31 PM
Get a load of this! The mitochondria is the powerhouse of the cell.
RevdJohnDevlin - 30-Oct-18 @ 1:23 PM
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