The nitrogenous bases that are found in both RNA and DNA are:

The formation of ions involves the

To test the effect that male Widowbird tail size has on mating success, different male birds had their tails altered to be shorter (or longer) than normal.  Some males’ tails were not altered in order to compare their mating success.  The males with unaltered tails are considered the:

The antibiotic penicillin damages bacteria by binding to the bacterial enzyme transpeptidase not at the active site. The antibiotic does not look similar to the normal substrate, but once it binds to the enzyme the enzyme the active site will change its shape.  This stops the enzyme from building a cell wall and leads to the bacterial cell lysis.  Based on this information,  penicillin is an example of:

A useful scientific hypothesis:

Chlorophyll is green because

Starch and glycogen are polysaccharides that are used as long term energy storage molecules. They are both:

If an organism is described as true bred or pure bred, it’s genotype must be:

For non-structural genes, “gene expression” is a term that relates to:

Which application of biotechnology uses an insect poison produced by the bacteria Bacillus to create an insect-resistant transgenic plant?