منابع مشابه
Further results on smallest defining sets of well known designs
A set of blocks which can be a subset of only one t-( v, k, At) design has been termed a defining set of that design. In an earlier paper the author examined the smallest such sets of blocks for certain designs; that work is continued here for further designs. Improved lower bounds for the cardinality of a defining set are given for the affine and projective planes of order n. 1. Defining Sets:...
متن کاملThe complete sequence of the smallest known nuclear genome from the microsporidian Encephalitozoon intestinalis
The genome of the microsporidia Encephalitozoon cuniculi is widely recognized as a model for extreme reduction and compaction. At only 2.9 Mbp, the genome encodes approximately 2,000 densely packed genes and little else. However, the nuclear genome of its sister, Encephalitozoon intestinalis, is even more reduced; at 2.3 Mbp, it represents a 20% reduction from an already severely compacted geno...
متن کاملEcological Guild Evolution and the Discovery of the World's Smallest Vertebrate
Living vertebrates vary drastically in body size, yet few taxa reach the extremely minute size of some frogs and teleost fish. Here we describe two new species of diminutive terrestrial frogs from the megadiverse hotspot island of New Guinea, one of which represents the smallest known vertebrate species, attaining an average body size of only 7.7 mm. Both new species are members of the recently...
متن کاملThe database of the smallest known auto-replicable RNA species: viroids and viroid-like RNAs
This is an online database in order to facilitate research on viroid, viroid-like RNAs and human hepatitis delta virus by presenting a large number of sequences and related data in a comprehensive and user-friendly format (e.g., position of their self-catalytic domains, open reading frame, prediction of the most stable secondary structures, etc.). This online database is available on the WWW at...
متن کاملSmall but sufficient: the Rhodococcus phage RRH1 has the smallest known Siphoviridae genome at 14.2 kilobases.
Bacteriophages are considered to be the most abundant biological entities on the planet. The Siphoviridae are the most commonly encountered tailed phages and contain double-stranded DNA with an average genome size of ∼50 kb. This paper describes the isolation from four different activated sludge plants of the phage RRH1, which is polyvalent, lysing five Rhodococcus species. It has a capsid diam...
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ژورنال
عنوان ژورنال: Science
سال: 1902
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.15.366.30