Dna is universal! The structure (and function) of all living - TopicsExpress



          

Dna is universal! The structure (and function) of all living things is the DNA, which is made of the exact same things. Whether youre talking about you or me, a blade of grass, a bird, a hippo, pond scum....anything, their DNA is composed of sugars, phosphates and 4 nitrogen bases. The only difference between you and me (and that blade of grass) is the sequence of our nitrogen bases. My DNA molecule is made up of the same stuff, but arranged in a different order. Its like you and I are working with the same 26 letters in different orders to create different words. The sequence of nitrogenous bases (adenine, guanine, cytosine, and thymine) is the only difference in the DNA of all living things yet their groupings make the same amino acids. DNA codes for the production of proteins, so the reason I dont have feathers or scales is because I dont have the DNA sequence to make the proteins that are found in feathers or scales (like birds or lizards have). In every living thing on this planet, a genetic sequence of cytosine-adenine-guanine would make the amino acid glutamine. Adding up those amino acids in varying ways is what makes the proteins that we may or may not have. Pretty freaking incredible when you think about all the diversity of life found on Earth
Posted on: Wed, 10 Sep 2014 11:22:08 +0000

Trending Topics



Recently Viewed Topics




© 2015