Facts! One must keep clear the purpose of assembling a body of facts. In a court of law, the facts are gathered in order to assign culpability. In science, very often, facts are regarded as stepping stones to the next set of questions. Example:

> Recent population genetic surveys in human and other mammals and in bumble bees have shown that microsatellites are highly efficient at differentiating populations or groups of populations. In this paper, we investigate their usefulness for honey bee population studies … Are microsatellites useful for differentiating subspecies and populations within subspecies? How does the pattern of variability of these markers vary between branches/subspecies/populations and which factors may be invoked to explain it? Is it possible to assign a given colony to its population of origin from microsatellite data and how do the individuals from this colony cluster within the population?

Microsatellite Variation in Honey Bee (Apis Mellifera L.) Populations. 1995. The Genetics Society of America. 

( For real scientists, nothing is really "known"; everything is provisional. It is as much a process of forgetting as learning. What we once thought and even believed, was quickly replaced with what we know now, and what we hope to discover soon ... )
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