Chatters was kind enough not to sound triumphant, although I had just supported his thesis: that Kennewick Man, like other ancient American skulls, indicates a population that predates modern craniofacial divisions -- that is, the differing appearances we sometimes call races.
For example, by age two, children readily infer that living things from the same category will share internal features and nonvisible functions despite differing appearances (e.g., Gelman and Coley, 1990; Gelman and Markman, 1986; Coley, 2012).
The formation of defects, differing in appearance (i.e., the ring-like defects on the Ge(111 -c(2 × 8) surface vs. the triple-hole defects on the Ag/Ge(111 -c3 × √3 surface), indicates that the mixing between Ni and Ge proceeds on both surfaces through different mechanisms.
In captivity choice tests great tits preferentially chose those mealworms (larvae of Tenebrio molitor) that had been experimentally enriched with carotenoids over control mealworms (Wilcoxon signed rank test, T = 66.5, p<0.05) (Figure 1a), despite them not differing in appearance or any other nutritional aspect than carotenoid content (Table 1).
However, decades of research have consistently found that captive and free-ranging wild birds cause frequency-dependent selection on all manner of food items differing in appearance [ 4, 6, 7, 25, 26, 28].
That difference in galaxy composition leads to differing outward appearances.
These use different courting displays, and differ in appearance: the "tufted" morph has a black body and pedipalps ("palps"), three black tufts across its "head", and pale legs; and the "gray" morph has black and white stripes all over its body and legs, orange palps, and no tufts.
These aggregates differ in appearance to the earlier-forming nemaline bodies, having a globular appearance rather than a clear and defined rod shape (Supplementary Figure S1).
Brn3a +/− and Brn3a +/+ mice appear to be indistinguishable in appearance and overall health and individual Brn3a +/− DRG neuronal cell bodies do not differ in appearance or number relative to Brn3a +/+ controls (Xiang et al., 1996).
