Browsing by Title Facultad de Ciencias
Now showing items 3542-3561 of 8176
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(2007)In the yeast Xanthophyllomyces dendrorhous the genes idi, crtE, crtYB, crtI and ast are involved in the biosynthesis of astaxanthin from isopentenyl pyrophosphate. The carotenoid production and the kinetics of mRNA expression ...
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(2001)Sex determination in mammals is controlled by the SRY gene located on the Y chromosome. It encodes a protein containing a DNA-binding and DNA-bending domain. In spite of recent advances in the identification of the mechanisms ...
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(1995)Northern‐blot analysis of RNAs from different tissues demonstrated that the mRNA for the protein kinase CK2α subunit is very abundant in the ovary of Xenopus laevis. The competitive reverse‐PCR technique has been used to ...
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(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2007-12-11)The Hedgehog (Hh) signaling pathway plays critical instructional roles during embryonic development. Misregulation of Hh/Gli signaling is a major causative factor in human congenital disorders and in a variety of cancers. ...
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(2013)Quaternary glaciations in Antarctica drastically modified geographical ranges and population sizes of marine benthic invertebrates and thus affected the amount and distribution of intraspecific genetic variation. Here, we ...
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(John Wiley & Sons, 2013)Quaternary glaciations in Antarctica drastically modified geographical ranges and population sizes of marine benthic invertebrates and thus affected the amount and distribution of intraspecific genetic variation. Here, ...
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(Universidad de Chile, 2009)
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(Universidad de Chile, 2010)
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(Universidad de Chile, 2022)El upcycling es un método innovador que se basa en la utilización de residuos como materia prima para la confección de productos nuevos. Una de las industrias con mayor producción de desechos en Chile es la agroindustria, ...
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(Universidad de Chile, 2004)
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(Springer Verlag, 2014)© 2014, The Author(s).There is a consensus that birds detect the earth’s magnetic field and use some of its features for orientation and homing purposes. Since the late 1960s, when the first solid behavioral evidence of ...
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(Society of Biology of Chile, 2002)The neural crest is induced at the border between the neural plate and the epidermis. A complex set of signals is required for the specification of the crest cells between the epidermis and the neural plate. Here we discuss ...
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(2011)In this work is proposed the extraction and determination of oxytetracycline (OTC) and oxolinic acid (OA) in fish feed by first-derivative spectrophotometry. The extractions are carried out by parallel modality, where OTC ...
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(Wiley, 2020)Studies on extrapair paternity (EPP) are key to understanding the ecological and evolutionary drivers of variation in avian mating strategies, but information is currently lacking for most tropical and subtropical taxa. ...
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(ECOLOGICAL SOC AMER, 2006-03)Climatic changes associated with the El Nino Southern Oscillation (ENSO) can have a dramatic impact on terrestrial ecosystems worldwide, but especially on arid and semiarid systems, where productivity is strongly limited ...
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(MDPI, 2020)Rising temperatures and increasing drought in Mediterranean-type climate areas are expected to affect plant-pollinator interactions, especially in plant species with specialised pollination. Central Chile experienced a ...
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(SOC Brasileira Ornitología, 2016-06)Nesting birds commonly incorporate feathers into nest linings given their insulation properties. Although use of feathers is common among swallows, here we provide the first recording of nests built almost completely with ...
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(Springer Verlag, 2016)© 2016, The Author(s). Studies of different hypersaline systems have revealed various types of limitation. We evaluated the phototrophic microbial assemblages over a whole seasonal cycle (wet vs dry) in the Salar de Alconcha, ...
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(Universidad de Chile, 2015)En el mejoramiento genético de uva mesa, es fundamental determinar los momentos apropiados de recolección del polen y de la polinización artificial. Con el propósito de aumentar la eficiencia del proceso se realizaron dos ...
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(Universidad de Chile, 2011)La fragmentación de Hábitat modifica la riqueza y abundancia de especies y sus interacciones ecológicas. Cambios en la abundancia de insectívoros, pueden modificar el éxito reproductivo de las plantas