K complex

... joining by hydrogen bonds qualifies the structure as a single molecule. By that reasoning you would always be looking at the vast number of single complex molecules that can be recognized as combinations of molecules. I think I recall reading Watson's DNA book and his specifically refering to DNA ...

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as far as i understand the topic, aging (and then death as a consequence) is a programmed event, composed of complex regulatory pathways. That's why you can administer small molecule inhibitors such as rosveratrol and rapamycin which lengthen life-span and retard aging. This ...

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... new non-sterile species. In single cell organisms one species may retain all or part of its original form inside of the other (endosymbiosis). In complex animals hybridization can be more difficult. Horses and donkeys normally give birth to a sterile mule but on rare occasions a fertile mule is ...

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... they could breed would be very small. There are multiple resons for this starting from simple phsyiological and behavioral differences to more complex elements such as chromosome numbers and genetics. One could perhaps get something done by genetic engineering, but even making a true hybrid ...

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... new non-sterile species. In single cell organisms one species may retain all or part of its original form inside of the other (endosymbiosis). In complex animals hybridization can be more difficult. Horses and donkeys normally give birth to a sterile mule but on rare occasions a fertile mule is ...

See entire post