Which branch of science was newly developed after the discoveries about dna? genetic engineering plant breeding animal breeding nuclear engineering

Joe has been suffering from asthma since childhood. recently, a severe asthma attack struck, after which he has been finding it difficult to breathe normally. what can ease his condition?

List three reasons people may begin using tobacco

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants