How does DNA convey information?
‘DNA contains the four bases, Adenine, Thymine, Cytosine and Guanine. the four bases will base complimentary pair in one of four ways A-T, T-A, G-C, C-G. Chromosomes are made up of DNA and chromosomes contain genes- hereditary units of coded information passed from parent to offspring. each gene has its own specific sequence of bases- often containing 100/1000’s of nucleotides and each gene codes for one protein/ polypeptide chain. proteins are created during protein synthesis which occurs in the ribosomes ( out of the nucleus) for the DNA code to travel out of the nucleus mRNA is necessary, which contains the nucleotide Uracil rather than Thymine, the mRNA complimentary base Pairs with the DNA and then leaves the nucleus, into the cytoplasm to the ribosomes. each molecule of mRNA contains a codon which codes for one amino acid. the tRNA brings the amino acid to the correct mRNA molecule as it has a anti-codon which complimentary base pairs with the codon on the mRNA. the amino acids j
