Many scientists agree that the domestic dog displays more morphological variation than any other known species, thanks to selective breeding by humans.
许多科学家都认为，国内的狗更显示形态比任何其他已知的物种变异，人类有选择育种的感谢。
2
DNA analysis and morphological evidence support recognition of the red Wolf as a distinct species. (See Wolves: Behavior, Ecology, and Conservation - Chapter 9).
DNA分析和形态学有力的支持力了红狼是个异种这一假说。
3
Water flow can affect structure of the community and species distribution, as well as the production, metabolic processes and morphological characteristics of macrophytes.