نتایج جستجو برای: cabbages

تعداد نتایج: 196  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1994
D P Matton N Nass A E Clarke E Newbigin

In some families of flowering plants, a single self-incompatibility (S) locus prevents the fertilization of flowers by pollen from the same plant. Self-incompatibility of this type involves the interaction of molecules produced by the S locus in pollen with those present in the female tissues (pistil). Until recently, the pistil products of the S locus were known in only two families, the Brass...

2007
Michael Lampis Valia Mitsou

More than 1000 years ago Alcuin of York proposed a classical puzzle involving a wolf, a goat and a bunch of cabbages that need to be ferried across a river using a boat that only has enough room for one of them. In this paper we study several generalizations of this problem, called River Crossing problems, involving more items and more complicated incompatibilities. Our study is made from an al...

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