Which life-form existed on Earth for the shortest period of time dinosaurs trilobites ammonoids placoderm fish

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.