Several features of the yeast mitochondrial genome, including high mutation rate, dynamic genomic structure, small effective population size, and dispensability for cellular viability, make it a promising candidate for generating hybrid incompatibility and driving speciation. Cytonuclear incompatibility, a specific type of Dobzhansky‐Muller genetic incompatibility caused by improper interactions between mitochondrial and nuclear genomes, has previously been observed in a variety of organisms, yet its role in speciation remains obscure. Recent studies in Saccharomyces yeast species provide a new insight, with experimental (...) evidence that cytonuclear incompatibility and DNA sequence divergence are both causes of the reproductive isolation of different yeast species. Interestingly, these two mechanisms seem to be perfectly complementary to each other in terms of their effects and evolutionary trajectories. Direct molecular analyses of the incompatible genes in yeasts have started to shed light on the evolutionary forces driving speciation. Editor's suggested further reading in BioEssaysThe cytoplasmic structure hypothesis for ribosome assembly, vertical inheritance, and phylogeny AbstractMitochondrial bioenergetics as a major motive force of speciation Abstract. (shrink)

When making decisions, governments can and should strive consciously to balance the demands of the present with the needs of future generations. Various advocates for greater governmental foresight have created new processes or institutions within existing systems of democratic government. These include long-range planning departments, futures commissions, impact statements on proposed legislation, environmental protection agencies, and formal technology assessment. But, much more remains to be done. Based on their extensive scholarly and practical experience, the contributors to this volume propose a (...) variety of techniques that will enable foresight to be effectively incorporated into governmental institutions and practices. (shrink)

1. 'P'osŭt'ŭ' tamnon ŭi yuryŏngdŭl : aedo ŭi aedo rŭl wihayŏ -- 2. Chwap'a mesiajuŭi ranŭn irŭm ŭi yongmang : 'p'osŭt'ŭ-p'osŭt'ŭ tamnon' ŭi kungnae suyong e taehayŏ -- 3. Sigan kwa chŏngŭi : Penyamin, Haidegŏ, Terida -- 4. Kungmin iranŭn noye : chŏnch'ejuŭijŏk kungmin kukkaron e taehan pip'anjŏk koch'al -- 5. Ŏttŏn sangsang ŭi kongdongch'e : minjok, kungmin kŭrigo kŭ nŏmŏ -- 6. Hanbando p'yŏnghwa ch'eje ŭi (t'al) kuch'uk ŭl wihayŏ : ŭl ŭi minjujuŭi ŭi kwanchŏm esŏ -- 7. P'uk'o (...) wa minjujuŭi : pakkat ŭi chŏngch'i, sinjayujuŭi, taehang p'umhaeng -- 8. Marŭk'ŭsŭ wa Alt'wiserŭ sai ŭi P'uk'o -- 9. (T'al) hyŏndae ihu, Marŭk'ŭsŭjuŭi ihu : Terida, K'ojellek, Ch'ak'ŭrabarŭt'i, kŭrigo kŭ nŏmŏ -- 10. Ch'akch'wi, paeje, rip'ŭrijent'eisyŏn : Marŭk'ŭsŭjuŭi ŭi t'alguch'uk. (shrink)