KSIĄŻKI POWIĄZANE ZE SŁOWEM «SYNGAMIC»
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1
Ostracoda and Global Events
Furthermore, laboratory cultures of this species can be changed from syngamic to
parthenogenetic by isolation of the females, and from parthenogenetic to
syngamic by placing the females on a near-starvation diet' (Kesling, 1951).
R. Whatley, C. Maybury, 1990
2
Darwin and the Nature of Species
But Poulton does nothing to elaborate on Darwin's species concept, for example,
whether it includes sterility between forms or even whether indeed Darwin
himself thought that species are fully syngamic. Instead, he re- peatedly
emphasizes ...
3
Heterosis Breeding in Vegetable Crops
The common pre-syngamic and post-syngamic sexual hybridization barriers are
overcome by this technique. 0 There is the possibility to transfer some very
valuable resistant genes from wild species to cultivated varieties. 0 Transfer of ...
Nagendra Rai, Mathura Rai, 2006
4
Defining Species: A Sourcebook from Antiquity to Today
If the main contention of this Address be accepted, that a species is a syngamic
and synepigonic group of individuals, an objective reality however difficult to
establish in practice, we have an additional powerful reason for the permanent
use of ...
5
Aspects of Ecology and Zoogeography of Recent and Fossil ...
All instars are, of course, potentially male or female if they belong to syngamic
species, and are destined to be one or other sex from the embryo. It is not difficult
to understand that 'proto-males' and 'proto-females' should acquire incipient ...
H. Löffler, D. Danielopol, 1977
6
Biology and Pathology of the Oocyte: Its Role in Fertility ...
Virtually all embryos (39/40) in which the type 0 pattern occurred at 22 hours
were syngamic by 26 hours. For logistical reasons, embryos with types 1-5
distribution were grouped together. However, by 26 hours, 89% (283/318) were
syngamic, ...
Alan O. Trounson, Roger G. Gosden, 2003
7
INTERNATIONAL REVIEW OF CYTOLOGY
... of vitronectin as an active component similar to the SAM in animals), and
calcium gradients. In addition, the involvement of electrotropism may occur as
well and cannot be neglected. D. Syngamic Phase With regard to the syngamic
phase ...
Scott D. Russell, Christian Dumas, 1992
8
Cumulative Subject Index
... 140, 574-575 pollen tube wall formation, 140, 573-574 syngamic phase, 140,
576-578 cytoplasmic DNA inheritance, 140, 577-578 MGU, preferentiality and
synchronization of double fertilization, 140, 576-577 preprogramrned fertilization,
...
9
Illinois Biological Monographs
The ostracods from which the cultures were started continued to be syngamic.
Wohlgemuth (1914, pp. 62-63) was able to reverse the experiment, producing a
syngamic form from a parthenogenetic, in only one case. An originally syngamic
...
10
Pennak's Freshwater Invertebrates of the United States: ...
The older idea of internal genetic or physiological "rhythms" being responsible for
the periodic occurrence of syngamic reproduction has been discarded. The
experimental work of Banta and others has demonstrated conclusively that the ...
Douglas Grant Smith, 2001
