FIELD: genome (chromosome) engineering. SUBSTANCE: method involves the use of induced androgenesis allowing to obtain progeny whose development will be determined by the paternal heredity only. If there is semen of some vanished species (for instance preserved by means of cryopreservation), it is possible to restore its genotype by way of androgenetic nuclear cytoplasmic hybridization. Such hybrids are not viable, however. For making the androgenetic progeny viable, instead of pure species eggs hybridization is performed with the use of eggs of hybrid species produced by insemination of ovicells of some other fish species with semen of the species to be restored. EFFECT: more effective method.
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