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optixは,蝶の翼のパターン模倣の繰り返し収束する進化を駆動しています
Robert D Reed1, Riccardo Papa, Arnaud Martin
1Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697, USA. rreed@uci.edu
Science (New York, N.Y.)
|July 23, 2011
まとめ
ヘリコニウス蝶の真似は,オプティックス遺伝子によって引き起こされる. この単一の遺伝子は,
科学分野:
- 進化生物学の進化生物学について
- 遺伝学 遺伝学とは
- 発達生物学 発達生物学とは
背景:
- 異なる種が似たような警告信号を進化させるミミクリは,収束進化の重要な例である.
- 模倣的現象型進化の遺伝的基礎と,コンバージェンスを駆動する遺伝子は,ほとんど不明のままである.
研究 の 目的:
- ヘリコニウス蝶のミメティックな翼パターンの進化の基礎となる遺伝子を特定する.
- 同じ遺伝子が種間の収束進化をどの程度推進しているのかを調査する.
主な方法:
- 責任ある遺伝子を特定するための遺伝子マッピング.
- 遺伝子の活性を理解するための遺伝子発現分析.
- 集団遺伝学は,種内および種間における遺伝的多様性を研究するためのものです.
主要な成果:
- 単一の遺伝子であるoptixは,複数のHeliconius種の赤い翼のパターンの有意な変化に責任があると特定されました.
- オプティックス遺伝子のシス調節的進化は,複雑な色彩パターンの繰り返し収束を促します.
結論:
- 単一の転写因子 (オプティックス) のシス調節的進化は,複雑な色パターンの収束的進化を繰り返し駆動することができます.
- この発見は,模倣的現象型の進化における収束と同質性の間の境界を曖昧にしています.
関連する概念動画
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01:38Limits to Natural Selection
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