This journal provides immediate access to some articles. Volume 267(1451); July 22, 2000 History or current selection? A molecular analysis of 'area effects' in the land snail Cepaea nemoralis. PMCID: PMC1690693 High intraindividual variation in internal transcibed spacer sequences in Aeschynanthus (Gesneriaceae): implications for phylogenetics. PMCID: PMC1690697 Decay of mutualistic potential in aphid endosymbionts through silencing of biosynthetic loci: Buchnera of Diuraphis. PMCID: PMC1690690 Reproductive alliances and posthumous fitness enhancement in male ants. PMCID: PMC1690684 Maximum force production: why are crabs so strong? PMCID: PMC1690686 | ||