关于鸟类生命树的创新和阐述
Thomas Guillerme1, Jen A Bright2, Christopher R Cooney1
1School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK.
Science advances
|October 25, 2023
概括
多样性的巨大进化跳跃可能来自逐渐的微观进化过程. 创新或远离既定模式的进化,推动了鸟形状的重大进化转变.
科学领域:
- 进化生物学是进化的生物学.
- 古生物学的古生物学
- 定量遗传学 是一种定量遗传学.
背景情况:
- 人们对表型多样性的超级进化跳跃的理解很少.
- 微观进化过程与宏观进化变化之间的联系仍然不清楚.
研究的目的:
- 调查微观进化过程是否可以解释表型多样性的巨大进化跃升.
- 评估特征阐述和创新在鸟进化中的作用.
主要方法:
- 利用了新的多变量特征建模方法.
- 分析了鸟进化过程中细化和创新的规模和分布.
主要成果:
- 阐述 (沿表型变化主要轴的进化) 在宏观和巨型进化尺度上是常见的.
- 创新 (远离主要轴的进化) 在超级进化尺度上更为突出.
- 在巨大的进化尺度上,形状的变化的主要轴是从类层面的创新中出现的.
结论:
- 通过创新对表型的重新定位是分歧的关键途径.
- 渐进的进化变化可以导致显著的表型分歧和超级进化模式.
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