linkedin post 2016-11-09 06:43:19

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CENTRAL CONTROL. "If a 'selfish' mutation occurs in a chromosomal gene, a suppressor mutation at any other locus in the genome would be favoured by selection. Hence the rest of the genome may win the contest, not because of any analogue of majority voting, but because of the large number of loci, and hence of possible suppressor mutations, that are available for each selfish mutation." https://lnkd.in/eZ5-m7K View in LinkedIn
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linkedin post 2016-11-08 05:23:06

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CONTINGENT IRREVERSIBILITY EXAMPLE 7. "The reversion from sex to parthenogenesis. Amniote vertebrates, although they may be parthenogens, always require sperm from males of another species to initiate development, perhaps because the sperm provides a centriole." https://lnkd.in/eZ5-m7K View in LinkedIn
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linkedin post 2016-11-08 05:19:29

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CONTINGENT IRREVERSIBILITY EXAMPLE 5. "The reversion from sex to parthenogenesis. Mammals are never parthenogens, probably because, at some loci in some tissues, only the allele inherited from the father is active: hence, in an embryo with no father, some essential gene activities are missing." https://lnkd.in/eZ5-m7K View in LinkedIn
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linkedin post 2016-11-12 05:20:51

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MULTIPLE PATHS. "If correct, this would imply that there was more locomotor diversity in the fossil record than has been suggested, and raises questions over whether there was a single origin for bipedalism or not. At the very least, if bipedalism appeared only once in the hominin radiation and is therefore monophyletic, such evidence would suggest that there were multiple evolutionary pathways responding to that selection pressure." http://onlinelibrary.wiley.com/doi/10.1111/j.0021-8782.2004.00296.x/full View in LinkedIn
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linkedin post 2016-11-12 05:15:47

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NEW THINKING. "The prevailing view in the earlier literature on the evolution of bipedalism has been a particularly linear one, with the usual pattern being a neat series of steps from arboreal quadruped to obligate biped. As more fossil evidence accumulated, some researchers entertained the possibility of locomotor diversity in contemporary early hominins, but this view was far from prevalent." http://onlinelibrary.wiley.com/doi/10.1111/j.0021-8782.2004.00296.x/full View in LinkedIn
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linkedin post 2016-11-12 05:13:16

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GAIT DIVERSITY. "Based on this inferred diversity and supported by the existing evidence for postcranial diversity, it is not unreasonable to assume that there was also a considerable degree of locomotor diversity in the early hominins." A variety of designs had to exist. https://lnkd.in/eicfqZV View in LinkedIn
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