Revista Sextante, 2019 La clasificación de los organismos vivos ha sido modificada numerosas veces, debido a que algunos grupos han sido difíciles de catalogar. Actualmente se reconocen siete reinos: Animalia, Plantea, Protozoa, Fungí, Archaea, Bacteria y Chromista.
Edy Luz Monterroza +3 more
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Ray-finned fishes (Actinopterygii) from the Upper Jurassic (Oxfordian) of the Atacama Desert, Northern Chile [PDF]
PeerJ, 2022 This contribution presents novel records of ray-finned fishes from the Oxfordian of Cerritos Bayos, northern Chile. This includes a Pachycormiformes diversity represented by macropredatory forms (aff. Hypsocormus sp.
Rodrigo A. Otero
doaj +3 more sources
Cáncer de mama en seis familias del Tolima y el Huila: mutación BRCA1 3450del4 [PDF]
Biomédica: revista del Instituto Nacional de Salud, 2020 Introducción. El cáncer de mama es un problema mundial de salud pública; entre el 5 y el 10 % de los casos presentan agregación familiar, lo que se explicaría por la presencia de mutaciones en genes de alto riesgo como el BRCA1 y el BRCA2.
Jennyfer Benavides +9 more
doaj +2 more sources
Taxonomía de los hongos: un rompecabezas al que le faltan muchas piezas [PDF]
Biomédica: revista del Instituto Nacional de Salud, 2023 Los hongos son organismos polifacéticos presentes en casi todos los ecosistemas de la tierra, donde establecen diversos tipos de simbiosis con otros seres vivos. A pesar de ser reconocidos por los humanos desde la antigüedad –y de la cantidad de trabajos
Álvaro León Rúa-Giraldo
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Freud e a filogenia anímica [PDF]
Revista Del Departamento De Psicología - UFF, 2007 Este ensaio investiga a presença, na obra de Freud, da idéia de uma filogenia anímica paralela, concomitante e dependente da filogenia somática descrita pelos teóricos da evolução. Objetivamos mostrar como se forma esta vizinhança da psicanálise com a biologia evolutiva, sublinhando que na filogenia esboçada por Freud, formas psíquicas típicas se ...
Monah Winograd
exaly +3 more sources
Impact of dietary intervention and supplementation on the physiological profile of individuals with Down syndrome [PDF]
Scientific ReportsDown syndrome, or trisomy 21 (T21), is a genetic neurodevelopmental disorder (NDD) often associated with various health challenges. In this population, physiological alterations remain poorly recognized, including dysregulated interactions among systems ...
Irving Hernández-Prior +5 more
doaj +2 more sources
New Paleogene records of cartilaginous fishes (Chondrichthyes) from central Chile, including the oldest lamnid diversity from the southeastern Pacific [PDF]
PeerJBackground The Paleogene chondrichthyan diversity of the southern hemisphere is mostly known in Antarctica, southernmost South America and New Zealand, but records from the southeastern Pacific remain sparse to date.
Rodrigo A. Otero
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The first embryo, the origin of cancer and animal phylogeny. I. A presentation of the neoplastic process and its connection with cell fusion and germline formation [PDF]
Frontiers in Cell and Developmental Biology, 2023 The decisive role of Embryology in understanding the evolution of animal forms is founded and deeply rooted in the history of science. It is recognized that the emergence of multicellularity would not have been possible without the formation of the first
Jaime Cofre, Kay Saalfeld
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Filogenias: conceptos y generalidades
Tequio, 2021 Any research in biology is an exercise of comparison that includes the study of evolution. The investigation of evolutionary patterns in either of its two approaches (micro or macroevolutionary) raises methodological challenges for any researcher interested in these topics.
Carlos Luis Leopardi-Verde +1 more
openaire +2 more sources
Loancorhynchus catrillancai gen. et sp. nov., a new swordfish (Xiphioidei, Blochiidae) from the Middle Eocene of central Chile [PDF]
PeerJ, 2019 This contribution describes the skull remains of a swordfish (Perciformes, Xiphioidei), recovered from Middle Eocene beds of central Chile. Comparison with known fossil and extant xiphioids reveals derived traits only present in the Neogene swordfish ...
Rodrigo A. Otero
doaj +2 more sources