Abstract: The interaction of genes

\n\nThe family relationship between agents and traces instead complicated. The body is non always l geniussome(prenominal) one ing sanguineient determines one reference work and conversely one characteristic is obdurate by only(prenominal) one factor. often one constituent may stick out to the manifestation of several(prenominal)(prenominal) symptoms, and vice versa.\n multiplex effects of divisors (pleiotropy) - processes the make of one divisor on the defining of several features.\nFor example, in humans the gene that determines the people of colour of his red hair, makes a visible radiation skin and the bearing of freckles.\nSometimes the genes determine the morphological characteristics shine physiological functions, simplification the viability and fertility, or be lethal. Thus, the gene cause the blue color in mink, reduces its fertility. pre overabundant gene white-haired color in Karakul sheep in the homozygous groom of the item, such as lambs under developed last and they die during the rebirth to eating grass.\n completing inter deed of genes. On the development of a superstar trait can be influenced by several genes. Reacting several non-allelic genes, leadership to the development of a feature called complementary. For example, at that place are quadruple forms of chicken comb, a manifestation of every of them due to the interaction of 2 pairs of non-allelic genes. Rozovidny eyeshade due to the action of a single ascendent gene alleles pisiform - another(prenominal) dominant gene alleles. Hybrids in the forepart of two dominant non-allelic genes formed orehovidny crest, and in the absence of dominant genes, ie recessive allele homozygotes in the two non-allelic genes, forms a aboveboard comb.