<em>Answer:</em>
<u>Polymerase Chain Reaction (PCR)</u>
Explanation:
Note that Polymerases Chain Reaction (PCR) is used to amplify food DNA to test for the presence of genetically modified DNA in food products because usually DNA fragments can be isolated from highly processed goods and are sufficiently intact to be amplified by PCR.
The process used by Genetic engineers is <u>called gel electrophoresis </u>where only a small number of regulatory sequences (promoter and terminator sequences) are used to control the expression of the inserted genes.
Answer
Examine the cladogram of whales and their ancestors presented in this video. Note that this diagram does NOT show modern whales evolving from any specific fossil form, but from the common ancestors of known fossil species and modern animals. Discuss the important difference between this view of evolutionary history, and the old view which often attempted to identify specific fossils as the ancestors of a living form.
<span>During the Middle Ages, China made the fewest recognized scientific discoveries compared to the others.</span>
When the concentration of a certain solute is low inside the cell with respect to the cell's external environment, then the cell performs active transport of the solute from the cytoplasm with a low concentration of solute within the cell to the cell's external with a high concentration of the solute. This process of active transport requires the need of energy in the form of ATP to drive the pumps that are present on its cell membrane.
Hence, sulphur and phosphorus are not gaseous biogeochemical.
