Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Banding of chromosomes
Banding of chromosomes: Treatment of chromosomes to reveal
characteristic patterns of horizontal bands. Thanks to these banding patterns that
resemble bar codes, each human chromosome is distinctive and can be identified without
ambiguity.