linkedin post 2016-12-12 07:06:07

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UNIFYING HYPOTHESIS. "More generally, our results unify the role of group formation and genetic relatedness across multiple evolutionary transitions and provide an unmistakable footprint of how natural selection has shaped the evolution of life." http://www.sciencedirect.com/science/article/pii/S0960982213005678 View in LinkedIn
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linkedin post 2016-12-10 07:41:09

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DISMEMBERING TEAM. "The hydrolysis of proteins and nucleic acids that accompanies senescence must be mediated by proteases and nucleases, respectively. Transaminases may function to shunt nitrogen into the most common mobile forms, glutamine and asparagine, and mobilization of lipids released from thylakoid membranes presumably requires conversion to sugars through the glyoxylate cycle." https://lnkd.in/dNWP3KD View in LinkedIn
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linkedin post 2016-12-12 07:02:19

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CLONAL TRANSITIONS. "We found that species with clonal group formation were more likely to have undergone the major evolutionary transition to obligate multicellularity and had more cell types, a higher likelihood of sterile cells, and a trend toward higher numbers of cells in a group." http://www.sciencedirect.com/science/article/pii/S0960982213005678 View in LinkedIn
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linkedin post 2016-12-12 06:58:10

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ABANDONING INDIVIDUAL LIFESTYLES. "In each of these transitions, a group of individuals that could previously replicate independently joins together to form a new, more complex life form that can only replicate as a whole. For example, genes come together to form genomes, cells join together to form multicellular organisms, and multicellular organisms join together to form eusocial societies." http://www.sciencedirect.com/science/article/pii/S0960982213005678 View in LinkedIn
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linkedin post 2016-12-12 06:53:40

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EIGHT MAJOR TRANSITIONS. "The evolution of multicellular organisms represents one of approximately eight major evolutionary transitions that have occurred on earth. The major challenge raised by this transition is to explain why single cells should join together and become mutually dependent, in a way that leads to a more complex multicellular life form that can only replicate as a whole." https://lnkd.in/df8KJQ4 View in LinkedIn
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linkedin post 2016-12-14 06:22:26

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SEPARATION IN CYANOBACTERIA. "The key enzyme for nitrogen fixation, nitrogenase, is sensitive to oxygen, and is thus inhibited by oxygenic photosynthesis. In filamentous cyanobacteria, this conflict is resolved by a spatial segregation of the two processes. A small proportion of the cells differentiate into heterocysts that fix nitrogen and do not engage in photosynthesis, and these heterocysts exchange metabolites with the vegetative cells in the same filament." http://rspb.royalsocietypublishing.org/content/early/2011/12/05/rspb.2011.1999.short View in LinkedIn
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linkedin post 2016-12-14 06:17:43

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SEPARATION OF POOR COMPATIBILITIES. "A second well-studied example is the incompatibility between photosynthesis and nitrogen fixation, and the resolution of this incompatibility in filamentous cyanobacteria." http://rspb.royalsocietypublishing.org/content/early/2011/12/05/rspb.2011.1999.short View in LinkedIn
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