What did Virchow observe that led him to determine one of the main components of cell theory? A. a cell splitting into two cells B. small “rooms” in cork C. plants that were composed of cells D. microscopic units making up parts of animals

Differentiation of cells changes the nucleic information. true false

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing

Is this mrna or rna need need the answer in a hurry