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Fact # 7) Who's Biggest? • In most functional categories, Humans have more genes than the other organisms whose genome have been sequenced. There is, however, one big exception, shown below. Can you spot it? A copy of this figure is available from NATURE magazine on-line: http://www.nature.com/nature/journal/v409/n6822/images/409860bn.2.jpg • The exception is the number of genes for "metabolism." As you can see from the diagram above, the "mustard weed" (Arabidopsis) has a larger number of metabolic genes than any animal sequenced to date, including humans. It seems as though plants display more metabolic complexity than animals. For More Information, visit the ORNL Genome Information Site: http://www.ornl.gov/hgmis/project/journals/insights.html Return to the Human Genome Top Ten List Return to millerandlevine.com   The Human Genome Top Ten: 10 9 8 7 6 5 4 3 2 1

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(A web site developed by Ken Miller and Joe Levine to provide scientific and education support for teachers and students using our textbooks)