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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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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Human papilloma virus inoculation: why only girls? L.Z.G. Touyz bds msc(dent) mdent(perio and Oral med) REFERENCES 1. Teenagers with grown-up diseases [editorial]. Lancet 2008; 371:960. 2. Donovan B. Sexually transmissible infections other than hiv. Human papillomavirus (hpv)–related oropharyngeal nonkeratinizing squamous cell carcinoma: characterization of a distinct phenotype. Human papilloma...
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The core Internet protocols have not changed significantly in more than a decade, in spite of exponential growth in the number of Internet users and the speed of the fastest links. The requirements placed on the net are also changing, as digital convergence finally occurs. Will the Internet cope gracefully with all this change, or are the cracks already beginning to show? In this paper I examin...
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ژورنال
عنوان ژورنال: Entornos
سال: 2016
ISSN: 2590-8081,0124-7905
DOI: 10.25054/01247905.1609