&#x27;What happened is that the gene construct seems to have jumped from Brassica to charlock in a single plant, which wasn&#x27;t able to produce seed.&#x27;<p>&quot;The new form of charlock was growing among many others in a field which had been used to grow GM rape. When scientists treated it with lethal herbicide it showed no ill-effects.&quot;<p>Brian Johnson isn&#x27;t mentioned in the linked to article ..