Suppose a plant breeder wants to isolate mutants in tomatoes that are defective in dna repair. however, this breeder does not have the expertise or equipment to study enzymes in dna repair systems. which methods would best allow the breeder to identify tomato plants that are deficient in dna repair?

 Plants that have increased levels of mutations that can either be in their germ-line or somatic tissues is what the plant breeder should look for because if plants re defective in DNA repair they should have higher rates of mutation .

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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.