共同生活
发表于 2025-3-23 11:29:19
W. Heisenberger, I will discuss how mammalian spermatozoa prepare themselves for fertilization and how the spermatozoa and eggs interact during fertilization. The process and mechanisms of sperm transport in the female genital tract will not be dealt with extensively here. Readers are referred to Bishop (1961, 1
Leaven
发表于 2025-3-23 15:50:12
K. Symanzik reaction and granule exocytosis are of primary interest to any discussion of polyspermy for cortical granule contents have been associated with polyspermy-preventing mechanisms in the eggs of animals of diverse species (for review, see Schuel, 1978, or Gulyas, 1980).
chronology
发表于 2025-3-23 20:23:26
K. Gottsteinapse, the synaptonemal complex (SC; see below) is formed and reciprocal recombination — crossing over — takes place. At metaphase I, the paired chromosomes have formed bivalents that are held together at the chiasmata (the points of cross overs), and disjoin at anaphase I. After a short interphase,
acquisition
发表于 2025-3-23 23:00:48
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贿赂
发表于 2025-3-24 03:54:00
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LASH
发表于 2025-3-24 06:53:15
M. Deutschmann,P. Meyer and molecular biology technologies have ensured that the gap has diminished in recent years (e. g. see chapters by Colombo, Kranz; Dumas et al. 1998; Huang et al. 1992; Wagner . 1990). While all plants show the alternation of haploid and diploid generations, the organisms resulting from the gametop
Water-Brash
发表于 2025-3-24 11:07:11
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minion
发表于 2025-3-24 16:24:58
K. Wirtzincreased, but still many ques tions remain to be answered. Being aware of the necessity of providing an inte grated view of the process of fertilization, this book has been entirely devoted to reviewing the process of oocyte fertilization at the cellular/molecular level in two different and separ
有斑点
发表于 2025-3-24 22:35:09
Übersicht über den heutigen Stand der Kenntnisse von der kosmischen Strahlung schnellbewegten Atomkernen besteht, in ähnlicher Elementverteilung wie bei der gewöhnlichen Sternmaterie, kann man kaum daran zweifeln, daß die kosmische Strahlung zu einem großen Teil einfach von den Sternen ausgesandt wird.
obstruct
发表于 2025-3-24 23:33:52
Die Nukleonenkomponente in der Atmosphäreger GeV den Stamm, von dem die übrigen Komponenten abzweigen und deren Verhalten sich in dem der Folgekomponenten mehr oder minder vollständig widerspiegelt. — Diese einfache Beschreibung trifft nur zu im Bereich mittlerer Energien bis etwa 100 GeV; bei höheren Energien tritt dagegen der Fall ein, d