THE MARKER GENE (W<sup>2</sup>) USING POSSIBILITY STUDY OF FOR SEX-LABELED SILKWORM BREEDS OBTAINING AND GENE POOL CONSERVATION
The results of the recessive gene w<sup>2</sup> (marking by sex at the stage of the eggs) introducing possibility studies to the collection fund of silkworm breeds were described in the article. This is a monogenic gene with a pleiotropic effect, which causes the absence of the silkworm embryos serous shell pigmentation and the eyes color of caterpillars, pupae and adults.Phenotypically it manifests as a white color of the eggs and eyes. The influence of the recessive marker to the silkworm vitality and productivity during its introduction into the genotypes of a local and foreign selection breeds was investigated. The research results using will allow us to significantly protect the silkworm collectione breeds from clogging.