The process of polymerase chain reaction is shown above. Using free nucleotides, DNA polymerase, and a cycle of heating and cooling, researchers in a biotechnology laboratory can accomplish what?

creating multiple copies of a gene of interest

Explanation:

option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.

b exhibiting favoritism toward the kikuyu people.