Three transition elements in group 12 of the periodic table are?
a. iron, nickel, and cobalt
b. mercury, zinc, and cadmium
c. copper, silver, and gold
d. neon, helium, and xenon

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.