(i) Flavr Savor tomatoes are genetically modified tomatoes characterised by delayed ripening and longer shelf life.

(ii) One gene-oneenzyme hypothesis is the idea that genes act to the production of enzymes with each gene responsible for producing a single enzyme that intum affects a single step in a metabolic pathway. Concept was proposed by George Beadle and Edward Lawric Tatum in 1941. 

(iii) Glycine is optically inactive because it does not affect the plane of polarised light. 

(iv) (i) Chargaff’s rule states that purines and pyrimidines are equal in amount ;.e.,A+G = C + T 

(ii) Molar amount of purine adenine is always equal to molar amount of thymine. Similarly guanine is equal by cytosine 

(iii) Sugar deoxyribosome and phosphate occur in equimolar proportion 

(iv) The ratio of A + T/ G + Cis constant for a species. 

(v) Electroporation: It is the technique of introducing DNA into the cell by a brief exposure to a very high voltage electric pulse.