Figure 7

Relative tibia length in selected rodents. Relative tibia length is reported as tibia length (mm) divided by the cube root of body mass (g^0.33). There is a progression from left to right from large-bodied rodents with relatively short tibiae (e.g., capybaras) to highly specialized bounding rodents with relatively long tibiae (e.g., jerboas and kangaroo rats). After 14 generations of selection, the Longshanks mouse approaches the relative tibia length of Northern viscachas (Lagidium peruanum) (see text) [15],[49].