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Sex ratios are subject to distortion by a range of inherited parasites (1) . Although it has been predicted that the presence of these elements will result in spatial and temporal variation in host sex ratio (2–4) , testing of this hypothesis has been constrained by availability of historical...
The US and China made bold statements in New York but the crunch will come in Copenhagen. Nigel Williams reports.
The peripheral endoplasmic reticulum forms a dynamic network of interconnected membrane tubules. Although some determinants of this striking architecture are known, the mechanism underlying fusion of individual tubules has remained elusive. Two studies now identify atlastin proteins as key...
Developmental dyslexia is a neurological condition that is characterized by severe impairment in reading skill acquisition in people with adequate intelligence and typical schooling (1–3) . For English readers, reading impairment is critically associated with a phonological processing disorder...
The genetic basis of morphological variation both within and between species has been a lasting question in evolutionary biology and one of considerable recent debate (1–3) . It is thought that changes in postembryonic development leading to variations in adult form often serve as a basis for...
Spiders are thought to be strict predators (1) . We describe a novel exception: Bagheera kiplingi , a Neotropical jumping spider (Salticidae) that exploits a well-studied ant–plant mutualism, is predominantly herbivorous. From behavioral field observations and stable-isotope analyses, we show...
Genomic imprinting resulting in the differential expression of maternal and paternal alleles in the fertilization products has evolved independently in placental mammals and flowering plants. In most cases, silenced alleles carry DNA methylation (1) . Whereas these methylation marks of imprinted...
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