Why only Y-?
نویسندگان
چکیده
منابع مشابه
Why Sex? and Why only in Pairs?∗
No single question has been more central to our understanding of sex than the question of why a species reproduces sexually when asexual reproduction avoids the twofold cost of males. Surprisingly, an equally fundamental question has received virtually no attention at all. That is, why are there no triparental species in which an offspring is composed of the genetic material of three individual...
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We outline a portfolio of novel iterable properties of c.c.c. and proper forcing notions and study its most important instantiations, Y-c.c. and Y-properness. These properties have interesting consequences for partitiontype forcings and anticliques in open graphs. Using Neeman’s side condition method it is possible to obtain PFA variations and prove consistency results
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1. Edlow BL, Wainger BJ, Frosch MP, Copen WA, Rathmell JP, Rost NS: Posterior circulation stroke after C1-C2 intraarticular facet steroid injection: Evidence for diffuse microvascular injury. ANESTHESIOLOGY 2010; 112:1532–5 2. Madawi AA, Casey AT, Solanki GA, et al: Radiological and anatomical evaluation of the atlantoaxial transarticular screw fixation technique: Case report and review of the ...
متن کاملWhy Sex? and Why Only in Pairs?1
Understanding the purpose of sex remains one of the most important unresolved problems in evolutionary biology. The di¢ culty is not that there are too few theories of sex, the di¢ culty is that there are too many and none stand out. To distinguish between theories we suggest the following question: Why are there no triparental species in which an o¤spring is composed of the genetic material of...
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ژورنال
عنوان ژورنال: Acta Medica International
سال: 2015
ISSN: 2349-0578
DOI: 10.5530/ami.2015.2.4