Recently, the American geneticists provided evidence that corn, the second most important cereal crop of the world, more than seven thousand years ago, has been subjected to targeted genetic change.
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From its wild relative — teosinte plants — corn characterized by the presence in its genome so-called gene-regulator. This gene is not directly involved in protein synthesis, but controls the activity of another gene, called «teosinte branched 1" (abbreviated to 1 tb), which controls the creation of the male flower of maize. DNA source teosinte plants in five sites with tb 1 is activated, and this makes the "savage" in the most valuable crops.
A team of researchers led by D. Doble from the University of Saint Paul (Minnesota, USA) estimated the probability and the fact whether the corn could be derived by classical methods of selection and breeding. In their opinion, such work would take 300 to 1,000 years old, and, moreover, if the following three conditions:
1) what was already known of the relevant methodology;
2) that perform this experiment was to present the final product — maize yields;
3) that the plan is carried out for many generations without the direct harvest, that is, without any practical impact.
Conclusion scientists even today farmers, with different mechanisms, chemical and biological fertilizers, growth simulators, as well as knowledge about the possible yield of the final product would not have taken for the implementation of such a problem.