In what is suitable for all organisms excreted by man. The knowledge of the laws of heredity and variability has opened up great opportunities for breeders to accelerate the change of plants, animals and microorganisms in the direction that a person needs. N.I. Vavilov deduced the law of homologous series of hereditary variation: “Species and genera that are genetically close, are characterized by similar series of hereditary variation with such accuracy that knowing a number of forms within one species, one can predict the existence of parallel forms in other species and genera.” Thanks to this law, Vavilov was able to predict a number of unknown forms of rye.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.