[From gene to disease; basic concepts].

The twenty-three pairs of chromosomes in the nuclei of human cells consist of four different components: the nucleotides adenosine, cytidine, guanosine and thymidine. Of this chromosomal DNA, 5% of the nucleotides owing to their sequence code for proteins. This involves first transcription of DNA to messenger RNA (mRNA) following which the coding part is… CONTINUE READING