Key Pages
Category: | Science and Technology |
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Keywords: |
Biodiversity - biology, evolution, homology, evo-devo
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Outlook: | In tandem with the development of inexpensive tools to sequence the genome of various species, the merger of evolutionary and developmental biology will enable us to study evolutionary variation in a methodical way, learning how organisms evolve and change their form. Evo-devo could enable us to develop medical interventions to prevent birth defects and heriditary diseases. Ultimately, evo-devo could enable us to construct organisms from their component genetic data.
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Summary Analysis: |
Evo-devo is the marriage of evolutionary biology and developmental biology, begun in the early 1990s as an alternative means for thinking about newly available genetic data. With the decoding of the human genome, evo-devo offers the promise of new scientific insights into evolution, and in particular the role of the environment as it influences evolution and speciation.
One of the early lessons of evo-devo is that the diversity of body plans and morphology in organisms across many phyla is not necessarily reflected in similar diversity at the level of the genetic sequences controlling development. Not only has this insight been helpful in empirically determining that morphological novelty cannot be explained by the genome alone, but it has also given rise to theories now being researched that will explain natural selection by action on regulation of gene expression rather than by the genetic product alone. Today we look at an organism's component DNA to try to deduce why an organism has particular traits. However, some scientists forecast that in the far future, evo-devo research might lead to a computer system that can read and analyze a sequence of raw DNA to predict how they'll be expressed. "The day will come when you can read off the sequence and deduce the organism," speculates UC Berkeley genetics and development professor Michael Levine, co-director of the university's Center for Integrative Genomics. Evo-devo will provide an understanding of how biological evolution and diversity resulted from gene regulation, and possibly external factors including ecology and the effect of other species. When they understand through this richer explanation how diversity evolved, scientists and researchers may be in a position to prevent or mask the emergence of undesirable novelties. Such tinkering with evolution is certain to raise ethical concerns, but the approach will also be seen as a mechanism for preventing birth defects or hereditary diseases. Finally, a far deeper understanding of the human genome -- and all of the social and religious consequences that entails -- will emerge from evo-devo as it enables the identification of genetic changes that are not translated into morphological differences. |
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At A Glance: | When: |
21–50 years +
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Where: |
Global
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How Fast: |
Years
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Likelihood: |
Medium-Low
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Impact: |
Medium-Low
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Controversy: |
Medium
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