Heterosis: emerging ideas about hybrid vigour

Emerging Ideas About Categories

The study of human categorization is contentious because it matters. How we understand the processes that give rise to categories is at the very core of how we understand human cognition. Over the past several decades, there has been growing concern that the assumptions that define and distinguish competing theories may notbe quite right. These assumptions are based on the traditional metaphor ...

Hybrid Vigour? Genes, Genomics, and History

Is the gene 'special' for historians? What effects, if any, has the notion of the 'gene' had on our understanding of history? Certainly, there is a widespread public and professional perception that genetics and history are or should be in dialogue with each other in some way. But historians and geneticists view history and genetics very differently - and assume very different relationships bet...

Hybrid vigour and maternal environment in mice

A combination of ovarian grafting and fostering was used to study the effects of preand postnatal maternal factors on adult behaviour. Inbred mice (BALB/c and C57BL/6) and F1 hybrids were compared to assess differential sensitivity to early maternal effects. In addition to the peculiar behavioural profile of BALB mice, results revealed the existence of a cognitive process in mice and confirmed ...

Evolving Ideas about Cyclins

instance, is associated primarily with activation of S James M. Roberts Division of Basic Sciences phase whereas CDK1 primarily with mitosis. However, assays using defined peptides reveal only subtle differFred Hutchinson Cancer Research Center and Howard Hughes Medical Institute ences in substrate preference between CDK1 and CDK2 (Holmes and Solomon, 1996), and there is no compelling 1100 Fair...

Some Ideas About Colour