cDNA is short for coding DNA. It is the DNA sequence matching the splicedmRNA, that is, the exons of an eukaryoticgene. In prokaryotes, the cDNA matches the primary mRNA transcript, as there are no exons or introns.
... equation is now in a form in which we can conveniently complete the square[?]. To "complete the square" is to add a constant (i.e., in this case, a ...