Studies have revealed that most, if not all, of traits, especially those of economic importance and quantitative inheritance, are the consequence of interactions of a number of genes.Therefore, it is crucial to understanding the molecular basis of the traits and developing molecular tools enabling effective use of the traits in enhanced breeding and molecular farming, i.e., producing particular chemicals or proteins of high value in plants, to isolate the genes controlling the traits and to determine how they work together to make the traits.
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