1) In certain viruses, DNA is found as a single stranded molecule. In one such virus, the A+T % is 46. The expected A % is ?
2)The human genome contains about 3 giga-base pairs (3 billion base pairs, often written 3 Gb), and about 20,000 genes. If we make the simple assumption that the average size of the coding region of each gene (the base pairs that are translated to proteins, we'll learn more later) is 2,000 bp, what is the proportion (%) of the genome that is base pairs that code for genes? What are all the other base pairs that don't code for genes?
3) A DNA polymerase enzyme is moving along the following DNA molecule.
5' CATAGAG 3'
What is the final base that will be incorporated into the newly synthesized strand?