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There is a striking difference between evolution and development. The path an embryo takes through developmental space forms a repeating loop, with embryos traversing basically the same regions of space every generation. This is in contrast to evolution, where the paths taken by species through genetic space are more (i)______________ and do not have a (ii)______________ character.
- Blank(i)
- open-ended
- straightfonvard
- predictable
- Blank(ii)
- complex
- circuitous
- cyclical
open-ended , cyclical 显示答案
以上解析由 考满分老师提供。
