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AMPHIDIPLOID AQUATIC ANIMAL AND METHOD OF BREEDING THE SAME
AMPHIDIPLOID AQUATIC ANIMAL AND METHOD OF BREEDING THE SAME
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机译:两栖类水生动物及其繁殖方法
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摘要
An amphidiploid aquatic animal according to the present invention has genomes AB of different species and carries fertile XXXY sex chromosomes. Among a large number of aquatic animals of the first filial generation kept in a closed system, a nonreductive sperm of a male and a nonreductive egg of a female are selected. Then the nonreductive egg is fertilized with the nonreductive sperm to create an amphidiploid aquatic animal having fertile XXXY sex chromosomes. Since this amphidiploid has the XXXY sex chromosomes, it can be crossed with an egg AXBX of an F1 hybrid that produces nonreductive eggs, thus ensuring a stable creation of amphidiploids in the subsequent generations by natural crossbreeding. In the meiotic division, one set of the chromosomes of each species is assuredly distributed to each gamete. Therefore, the trait of the first generation (F1) will be perpetually maintained. Since no genetic separation takes place, two sets of the genomes of different species are always inherited to every individual. Therefore, inbreeding depression will not take effect even if relative mating is repeated.
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机译:根据本发明的二倍体水生动物具有不同物种的基因组AB,并携带可育的XXXY性染色体。在保持在封闭系统中的许多第一代子代的水生动物中,选择了雄性的非还原性精子和雌性的非还原性卵。然后,将非还原性卵与非还原性精子受精,以产生具有可育XXXY性染色体的二倍体水生动物。由于这种二倍体具有XXXY性染色体,因此可以与产生非还原性卵的F1杂种的卵A X Sub> B X Sub>杂交,从而确保稳定地产生二倍体在后来的世代中通过自然杂交。在减数分裂分裂中,每个物种的一组染色体确保分布到每个配子。因此,将永久保留第一代(F1)的特征。由于没有发生基因分离,所以每个人都会继承两组不同物种的基因组。因此,即使重复相对交配,近交抑制也不会生效。
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