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Institución detectada Período Navegá Descargá Solicitá
No detectada desde mar. 1997 / hasta dic. 2023 Science Journals

Información

Tipo de recurso:

revistas

ISSN impreso

0036-8075

ISSN electrónico

1095-9203

Editor responsable

American Association for the Advancement of Science (AAAS)

País de edición

Estados Unidos

Fecha de publicación

Cobertura temática

Tabla de contenidos

A Correlation for the 21st Century

Terry Speed

<jats:p>A novel statistical approach has been developed that can uncover nonlinear associations in large data sets.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1502-1503

Can Ignorance Promote Democracy?

Jevin D. West; Carl T. Bergstrom

<jats:p>When a group needs to reach a consensus decision, uninformed members can help to reduce the influence of a manipulative minority.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1503-1504

A World Awash with Nitrogen

James J. Elser

<jats:p>Human disruption of the nitrogen cycle has left signs across the Northern Hemisphere since about 1895 C.E.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1504-1505

Arranging Reactive Meetings of Cold Radicals

Ian R. Sims

<jats:p>The challenging determination of the rate of reaction of nitrogen atoms with hydroxyl radicals at low temperatures may affect models of interstellar dinitrogen formation.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1506-1507

Sensible Balance

Udo Ernst; Klaus Pawelzik

<jats:p>The activities of cortical neurons are controlled through the plasticity of inhibitory synapses.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1507-1508

Closing the Cycle

John C. Meeks

<jats:p>Identification of two proteins closes a key metabolic cycle previously thought to be incomplete in cyanobacteria.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1508-1509

Translation Goes Global

Robert B. Weiss; John F. Atkins

<jats:p>An assessment of all ribosomes engaged in protein synthesis expands the view of the potential size of the cellular proteome.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1509-1510

Har Gobind Khorana (1922–2011)

Marvin Caruthers; Robert Wells

<jats:p>The remarkable work of a Nobel laureate saw breakthroughs in chemistry, biochemistry, and genetics.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1511-1511

Cause and Effect in Biology Revisited: Is Mayr’s Proximate-Ultimate Dichotomy Still Useful?

Kevin N. Laland; Kim Sterelny; John Odling-Smee; William Hoppitt; Tobias Uller

<jats:p>Fifty years ago, Ernst Mayr published a hugely influential paper on the nature of causation in biology, in which he distinguished between proximate and ultimate causes. Mayr equated proximate causation with immediate factors (for example, physiology) and ultimate causation with evolutionary explanations (for example, natural selection). He argued that proximate and ultimate causes addressed different questions and were not alternatives. Mayr’s account of causation remains widely accepted today, with both positive and negative ramifications. Several current debates in biology (for example, over evolution and development, niche construction, cooperation, and the evolution of language) are linked by a common axis of acceptance/rejection of Mayr’s model of causation. We argue that Mayr’s formulation has acted to stabilize the dominant evolutionary paradigm against change but may now hamper progress in the biological sciences.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 1512-1516

A Natural Deletion of the HoxC Cluster in Elasmobranch Fishes

Benjamin L. King; J. Andrew Gillis; Heather R. Carlisle; Randall D. Dahn

<jats:p> Sequence analysis shows that sharks and batoids lack one of four <jats:italic>Hox</jats:italic> gene clusters once thought necessary for development. </jats:p>

Palabras clave: Multidisciplinary.

Pp. 1517-1517