Question

Differentiate between the following:

Locally grown tomato and 'Flavr Savr' tomato

Answer 1

Basis of Difference	Locally grown tomato	'Flavr Savr' tomato
Genetic modification	A locally grown conventional tomato is not necessarily genetically engineered to delay ripening.	The 'Flavr Savr' tomato is genetically engineered to delay ripening by blocking the expression of a native tomato gene.
Polygalacturonase production	A conventional tomato produces polygalacturonase, an enzyme that breaks down pectin and softens the fruit.	The production of polygalacturonase is blocked in the 'Flavr Savr' tomato.
Ripening and softening	A conventional tomato softens as it ripens because pectin is broken down.	The 'Flavr Savr' tomato softens and ripens more slowly because pectin breakdown is reduced.
Shelf life	A conventional tomato generally has a shorter shelf life than the 'Flavr Savr' variety.	The 'Flavr Savr' tomato has a longer shelf life because its ripening and softening are delayed.
Flavour	A conventional tomato develops flavour as it ripens, but it may soften and spoil sooner.	The 'Flavr Savr' tomato retains its flavour for longer and has a longer, more flavourful shelf life.