Talk story about a biogeography conference held at the American Museum of Natural History to discuss the two opposing theories of the means by which animals and plants became distributed over the earth: the vicariance and dispersalist distribution theories.
By Henry S. F. Cooper The New Yorker, September 10 , 1979P. 37 Talk story about a biogeography conference held at the American Museum of Natural History to discuss the two opposing theories of the means by which animals and plants became distributed over the earth: the vicariance and dispersalist distribution theories.
In herons and some hawks the tips of the plumules disintegrate into a fine scaly powder that becomes distributed over the plumage, providing protection against wetting and giving it a peculiar sheen; accordingly, these specialized down feathers are called powder down.
Patches were found to first appear around the end of the PSSR (Maruyama and Kawamura 2006), and become distributed, sometimes over 10,000 km in EW extent (Röttger 1973).
Work from our own laboratory as well as that from other groups confirmed and extended this view of a complex cellular disorganization: in the somatosensory cortex, neurons with different laminar characteristics are severely intermingled and become distributed all over the cortical thickness (Dekimoto et al. 2010; Wagener et al. 2010; Boyle et al. 2011).
Human ERVs (HERVs) have become distributed within human DNA over the course of evolution.
As Figure 6 demonstrates, in this simulation experiment the growth yields become bimodally distributed over the crowding coefficient samples, suggesting that E. coli can switch bimodally.
At the beginning of prophase, the components of the pre-rRNA processing machinery do not remain in the vicinity of the rDNAs (Gautier et al. 1992) but become partially distributed over the surface of all the chromosomes (reviewed in Hernandez-Verdun et al. 1993).
In contrast, malignant cells generally show unstable cell cell contacts (Kinch and Burridge, 1995), and a consequence of this change is that the high levels of EphA2 on malignant cells fail to bind ligand and thus become diffusely distributed over the cell surface (Zantek et al, 1999; Macrae et al, 2005).
