Natural selection drives the fine-scale divergence of a coevolutionary arms race involving a long-mouthed weevil and its obligate host plant.

Quantitative evaluation of natural selection Natural selection analyses, in which the proportion of surviving seeds was used as a fitness measure, revealed significant or marginally significant directional selection for thicker pericarps in four of the six populations examined ( P < 0.09), whereas it was nonsignificant but positive in the remaining population (Fukagawa; P > 0.5) (Table 3 ).

also in 26,082 other papers