Answer:
B. Use the polymerase chain reaction (PCR) to make multiple copies of the DNA.
Explanation:
The scientist is to analyze a small sample of DNA, the most useful step to start this would be first the use of polymerase chain reaction to make various copies of that DNA sample. PCR is essential and quick process that gives a lot of copies within few hours. It uses the sample or target DNA, according to which the primers are designed. Taq polymerase and DNA polymerase are also used in the process, it consist of various cycles in which copies are made. There are three basic steps 'Denaturation', 'annealing', and 'extension'.
Hey there,
There are many ways waves can shape Earth's surface. For example, the waves can constantly brush up against a rocky ledge or cliff, and it can shape the cliff. It can change it's shape and/or form and can break away the rock or land. The waves can also bang against the rock, making it loose and the rock shapes itself by falling off or apart. This is otherwise known as erosion.
Best Of Luck,
- I.A. -
