Grey matter in the spinal cord of a mammal consists mainly of the cell bodies of motor neurons and A. the fibres of motor neurones.
B. the cell bodies of relay neurones.
C. the fibres of sensory neurones.
D. the cell bodies of sensory neurones.

i think the answer is b.

hope it

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.

other information encoded in your genes might distinguish you from the others in the group