(Science: radiobiology) in a fusion reaction involving two nuclei, there are typically a variety of possible sets of products which can form. The branching ratio for a particular set of products is the probability that that set of products will be produced.
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... a linear progression (such as shown in charts of human evolution) but a branching, sprawling, haphazard phenomenon that is difficult to demonstrate ... or mitochondrial to nucleic mammal. The mass-roosting and migration behavior is a very effective survival mechanism, as it decreases predation ...
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