Like other cellular organelles, the bipolar spindle is a structure of well-defined size and shape. Now, spindle fusion experiments using micro-manipulation have allowed current models for spindle morphogenesis and size control to be tested.

Ho ow w O Of ff fs se et ts s D De ef fe ea at te ed d t th he e K Ky yo ot to o P Pr ro ot to oc co ol l Abstract Developing countries sell carbon offset credits at a profit, but that profit would be reduced if they accepted a cap on emissions. This linkage increases their resistance to accepting such caps. Also, the profitability of offsets motivates developing countries to insist on stricter...

incompatibility in hazelnut (c. avellana l.) is the sporophytic type and under the control of a single s-locus with multiple alleles. compatibility of pollen-stigma in hazelnut is an important consideration in planning crosses in breeding program and in choosing pollinizers for orchard planting. in this study, fluorescence microscopy was used to determination of s-alleles and compatibility rela...