1 Throughout this paper the term fragment is used to designate a portion of a chromosome resulting from one or more breaks in an original chromosome and having no spindle attachment. The term chromosome is applied to an original chromosome or the part of an original chromosome containing a spindle attachment. 2 Carlson, J. G., Genetics (in press). 3 Mather, K., Proc. Roy. Soc. London, B124, 97-...

-Myen, P. and J. L. Patton. 1989. The Akodon of Peru and Bolivia-Revision of the fumeus grout, (Rodentia: Sigmodontinae). Occ. Pap. M m . Zool., Univ. Michigan, 721 tl-35,figs. 1-1 I . A new species of the genus Akodon is described from Puno and Cusco departments, southern Peru. It appears to be similar and perhaps closely related to Akodon fumew, a species that inhabits the eastern slopes of t...

Sánchez, J.A. & S.D. Cairns. An unusual new gorgonian coral (Anthozoa: Octocorallia) from the Aleutian Islands, Alaska. Zool. Med. Leiden 78 (15), 27.viii.2004: 265-274, figs 1-8.— ISSN 0024-0672. Juan A. Sánchez & Stephen Cairns, Department of Systematic Biology, National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, MRC-0163, Washington, D.C. 20013-7012, U.S.A. (email: c...

Hofmann, K. & Tausig, F. (1955). J. biol. Chem. 213, 425. Lapworth, A. & Mottram, E. N. (1925). J. chem. Soc. 127, 1628. Longenecker, H. E. (1939). J. biol. Chem. 128, 645. Moir, R. J., Somers, M., Sharman, G. & Waring, H. (1954). Nature, Lond., 173, 269. Reiser, R. (1951). Fed. Proc. 10, 236. Society of Public Analysts (1933). Analyst, 58, 203. Sperry, W. M. (1928). J. biol. Chem. 78, xliv. Sw...

We prove that if an nth degree rational Bézier curve has a singular point, then it belongs to the two (n− 1)th degree rational Bézier curves defined in the (n− 1)th step of the de Casteljau algorithm. Moreover, both curves are tangent at the singular point. A procedure to construct Bézier curves with singularities of any order is given.  2001 Elsevier Science B.V. All rights reserved.

This paper calibrates real and hypothetical willingness-to-accept estimates elicited for consumer goods in a multi-unit, random nth-price auction. Using a within-subject experimental design, we find that people understated their real willingness to accept in the hypothetical regimes, framed both as demand and non-demand revealing. After controlling for personspecific effects, however, hypotheti...

(1924); Spemann, H., Arch. Entw.-Mech., 123, 389-517 (1931); Mangold, O., Naturwiss., 21, 761-766 (1933); Holtfreter, J., Arch. Entw.-Mkch., 127, 619-775 (1933). 10 R6hlich, K., Arch. Entw.-Mech., 118, 164-199 (1929). it Harxison, R. G., Anat. Rec., 64, Suppi. 1, 38-39 (1935). 12 Yntema, C. L., Jour. Exp. ZoOl., 65, 317-357 (1933). Is Twitty, V. C., Ibid., 50, 319-344 (1928); see also the somew...

SHUTLER, D., and MULLIE, A. 1991. Size-related foraging behaviour of the leaf-cutting ant Atta colombica. Can. J . Zool. 69: 15301533 In a Costa Rican forest adjacent to cattle pasture, larger individuals of the leaf-cutting ant Atta colombica carried heavier loads and foraged farther from the colony, as predicted by foraging theory. Counter to foraging theory, individual ants did not increase ...