Genetic engineering Introduction to genetics

since traits come genes in cell, putting new piece of dna cell can produce new trait. how genetic engineering works. example, rice can given genes maize , soil bacteria rice produces beta-carotene, body converts vitamin a. can children suffering vitamin deficiency. gene being put crops comes bacterium bacillus thuringiensis; gene makes protein insecticide. insecticide kills insects eat plants, harmless people. in these plants, new genes put plant before grown, genes in every part of plant, including seeds. plant s offspring inherit new genes, has led concern spread of new traits wild plants.

the kind of technology used in genetic engineering being developed treat people genetic disorders in experimental medical technique called gene therapy. however, here new gene put in after person has grown , become ill, new gene not inherited children. gene therapy works trying replace allele causes disease allele works properly.