If there is 20% T that means there is also 20% A. 20% + 20% = 40%
100% - 40% = 60%
Since there is the same percentage of G and C 60%/2 =30%
30% C
30% G
20% T
20% A
This is known as Chargaff's rule.
Then you also have 13% cytosine, 37% guanine, and 37% adenine.
27+ 27 = 54 (how much T and A are in the sample) 100-54 = 46 (how much G and C are in the sample) 46/2 = 23% of the bases will be cytosine.
It's not that the individual hydrogen bonds are stronger but rather there are more of them. Between A and T there are two hydrogen bonds, between G and C there are three hydrogen bonds. The additional hydrogen bond between G and C does mean that the bonding between G and C is much stronger then that between A and T and requiring of significantly more energy to break.
Affected? Hell, they're MADE from your DNA, pretty much... though of course they'e not made OF DNA - proteins consist of one or more polypeptide chains (which are chains of amino acids linked by peptide bonds). But, in short - your DNA is transcribed into mRNA (by particular enzymes, and enzymes are also proteins by the way...) - so basically a copy is made of your DNA - which is then translated into a polypeptide in little cell organelles called ribosomes - each 3 bases of DNA (or mRNA if you like...) codes for a particular amino acid, which is sort of brought to the ribosome by a tRNA molecule.... You know the bases, right? A, T, C, G, U (Adenine, Thymine, Cytosine, Guanine, Uracil)? Well, Adenine always binds with thymine, and cytosine always binds with guanine... and Uracil is the RNA equivalent of thymine. so here's an example of how it works (assuming the top strand of DNA is transcibed):
"nucleic acids store and transmit hereditary, or genetic, information. there are 2 kinds of nucleic acids: ribonucleic acid (RNA) and deoxyribonucleic acid (DNA). as their names indicate, RNA contains the sugar ribose and DNA contains the sugar deoxyribose." -Prentice Hall: Biology (p.47) hope this helped
Then you also have 13% cytosine, 37% guanine, and 37% adenine.
27+ 27 = 54 (how much T and A are in the sample) 100-54 = 46 (how much G and C are in the sample) 46/2 = 23% of the bases will be cytosine.
For each person, Adenine, Thymine, Cytosine, and Guanine can be in different amounts. It what makes you you.
Erwin Chargaff is his name
it tells you how much of the molecule the element is
it tells you how much of the molecule the element is
Adenine , cytosine, guanine, thymine, and uracil.(acids) use yahoo answers, its much better and u get more answers
It tells you how much of a molecule is made up of each element. - APEX
It's not that the individual hydrogen bonds are stronger but rather there are more of them. Between A and T there are two hydrogen bonds, between G and C there are three hydrogen bonds. The additional hydrogen bond between G and C does mean that the bonding between G and C is much stronger then that between A and T and requiring of significantly more energy to break.
Percentage composition= (mass of the element/mass of the molecule)*100 The fraction of the molecule's mass that comes from the element's mass
If a quarter of the mass of the molecule is iron and the mass of the molecule is 89600u, then the mass of iron is 22400u ... a quarter of the total mass.
DNA is a double-stranded molecule twisted into a helix (think of a spiral staircase). Each spiraling strand, comprised of a sugar-phosphate backbone and attached bases, is connected to a complementary strand by non-covalent hydrogen bonding between paired bases. The bases are adenine (A), thymine (T), cytosine (C) and guanine (G) so pretty much complementary bases are connected by a hydrogen bonding.