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Gametogenesis in Planktonic Foraminifera
Science, 1976Gametogenesis in Globigerinella aequilateralis and Globigerinoides sacculifer in culture is preceded by sinking of the organism and loss of its spines. Hundreds of thousands of flagellated gametes, about 5 micrometers in diameter, are produced within the parent shell and released within a ...
A W, Bé, O R, Anderson
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Gametogenesis of Plasmodium vinckei
Nature, 1965MANY authors in the past have observed the disappearance of gametocytes of certain blood protozoa as a result of their continuous and prolonged mechanical transmission. This phenomenon was especially studied by Vincke et al.1, Rodhain et al.2, Jadin, Yoeli and Pierreux3, and by Michiels4 in strains of Plasmodium berghei maintained in the laboratory for
J, Bafort, I H, Vincke, G, Timperman
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Monitoring meiosis in gametogenesis
Theriogenology, 1998Meiotic recombination is essential to hold homologous chromosomes together so that they can separate accurately in the formation of gametes, thus preventing fetal loss due to aneuploidy. How do germ cells know when they have finished genetic recombination and that it is time to enter the meiotic division phase, and what are the elements that signal the
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1994
The process of microsporogenesis, or pollen development, encompasses all stages from microsporocyte meiosis to maturation of the male gametophyte. Meiosis is described in some detail in another chapter of this volume, and therefore the focus of this chapter will be on postmeiotic events.
Patricia Bedinger, Scott D. Russell
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The process of microsporogenesis, or pollen development, encompasses all stages from microsporocyte meiosis to maturation of the male gametophyte. Meiosis is described in some detail in another chapter of this volume, and therefore the focus of this chapter will be on postmeiotic events.
Patricia Bedinger, Scott D. Russell
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Gametogenesis and fertilization
1992Abstract Millipedes have separate sexes. Secondary sexual structures have evolved to a high degree to ensure successful transfer of sperm from males to females. In this chapter, all aspects of reproduction will be covered, from the structure of reproductive organs and gametes, through to mating behaviour, egg laying, and early ...
Stephen p. Hopkin, Helen J Read
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Botanical Gazette, 1932
1. A survey of the available literature on sexual reproduction in Vaucheria from Vaucher down to the present time is given. From this survey it appears that the sperms have been observed in all species investigated, with the possible exception of V. geminata (there is some doubt about the plant studied by Schenk being V. geminata). 2.
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1. A survey of the available literature on sexual reproduction in Vaucheria from Vaucher down to the present time is given. From this survey it appears that the sperms have been observed in all species investigated, with the possible exception of V. geminata (there is some doubt about the plant studied by Schenk being V. geminata). 2.
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