in the sperm nucleus in the egg, or in the first segmentation spindle. Its function must, therefore, be confined to the process of spermatogenesis. From the standpoint of sex determination, we Studies in Spermatogenesis - Página 18de Nettie Maria Stevens - 1905Vista completa - Acerca de este libro
| Bryn Mawr College - 1906 - 310 páginas
...Sagitta it is known to be confined to the male germ-cells. No such element occurs in the ovogenesis, in the sperm nucleus in the egg, or in the first segmentation...spermatogenesis. From the standpoint of sex determination, we have in Tenebrio molitor the most interesting of the forms considered in this paper. In both somatic... | |
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