What do "adduction" and "abduction" mean?

Adduction:

Adduction may be defined as body movement towards the body's midline. The movement of arms straight out of the shoulder and brings down to the sides , this shows an adduction movement. Adduction movement of finger beings the digit towards hand center.

Abduction:

Abduction may be defined as body movement away from the body's midline. The movement of hands from body side upto the shoulder, this shows an abduction movement. Abduction movement of finger brings the digit away from the hand center.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.