The essence of the law of homologous series V.I. Vavilova: genetically close species and genera are characterized by similar series of hereditary variability, with such accuracy that, knowing a number of forms within one species, it is possible to predict the presence of parallel forms in other species and genera. The closer the relationship, the more complete the similarity in the ranks of variability.
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.