Examlex
To reposition the insertion point using the mouse, move the mouse to the position where you want the insertion point to appear, and then click the left mouse button.
Cladograms
A diagram used in cladistics which shows relations among organisms.
Molecular Clocks
Methods used to estimate the time of evolutionary events based on the hypothesis that genetic mutations accumulate at a predictable rate over time.
Fishlike Vertebrates
Aquatic animals featuring a backbone, including both true fish and fish-shaped species with similar living habitats and structures.
Million Years
A time unit used in geology and astronomy to describe extremely long periods, typically used in the context of the age of the earth or the distance of cosmological objects.
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