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This is an interesting question, and it's been subject to a fair amount of research. From an epidemiological perspective, most rabies outbreaks have been studied in dogs. Among domestic dogs, the R0, or basic reproduction number, of rabies is usually quite low—estimated to be around 1.2 in rural sub-Saharan Africa, and <2 in most historically observed ...


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I think that you are talking about what are sometimes called "rates of evolution", see also https://www.thenakedscientists.com/articles/questions/do-smaller-organisms-evolve-faster. That wiki is a collection of info of interest mostly to specialists, but the blog post may be helpful. The short answer is that there is a strong negative correlation between ...


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A lack of strong evidence causes the field to be mostly hypothetical. Detailed pre-cambrian fossils are necessary, from the 1bn-600 million years ago, to find a protostome - deuterostome ancestor. Genetic data is also inconclusive. A search for bilateral common ancestor gives i.e. dev.biologists.org/content/129/13/3021 It's a summary of research, where the ...


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