Test: GRE Subject Test: Biochemistry, Cell, and Molecular Biology

1.

Barbara McClintock initially discovered transposons in her work on corn at Cold Spring Harbor Lab, which she called the Ac / Ds system. What were dissociators (Ds)?

Defective transposons that served as sites of chromosome breakage

None of these are correct

Genes that are interrupted by a transposon

A transposon that suppresses another transposon

Transposons that are mobile and insert all over the genome

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