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 w2 (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.