| 单词 |
ovogenesis |
| 释义 |
ovogenesis Biol.|əʊvəʊˈdʒɛnɪsɪs|
[mod.L. (Weismann), f. ovo- + -genesis; the etymological form is oogenesis.]
The production or formation of an ovum. So ovogeˈnetic, oˈvogenous adjs., contributing to the formation or growth of the ovum.
1886A. Thomson in Q. Jrnl. Micros. Sc. June 598 According to Weismann, the parallel would be between the surplus ‘ovogenetic’ polar vesicles and the surplus spermatogenetic basal protoplasm and nucleus. 1887Amer. Nat. XXI. 947 The interest which attaches to the development of the spermatozoon..is not less than that which attaches to the development of the ovum (ovogenesis). 1889Geddes & Thomson Evol. Sex viii. 107 [Weismann] distinguishes in the nucleus of the ovum two kinds of plasma,—(1) the ovogenetic or histogenetic substance, which enables the ovum to accumulate yolk, [etc.]..and (2) the germ-plasma, which enables the ovum to develop into an embryo. 1890Weismann in Nature 6 Feb. 322/1, I have interpreted the first polar body of the Metazoan ovum as a carrier of ovogenous plasm, which has to be removed from the ovum in order that the germ-plasm may attain the predominance. |
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