31-07-2012, 03:14 PM
DNA
DNA.pptx (Size: 3.12 MB / Downloads: 38)
What are the bases in DNA
A – adenine
T – thymine
C – cytosine
G – guanine
Base pair rules
DNA in eukaryotes has regions of coding and noncoding DNA. The regions of DNA that code for proteins or traits are called EXONS, while the regions that do not code for proteins are called INTRONS.
Translation
Single stranded
Does not contain thymine but has uracil instead.
tRNA carries 3 base pair code for specific amino acid.
Amino acids compose polypeptid chains.
One or more polypeptide chains compose a protein
proteins provide the “blueprints” for our characteristics and functions.
Steps to Translation
4. Amino acids attached to a tRNA molecule and are brought over to the mRNA.
5. This tRNA has an anticodon that matches the codon on the mRNA strand