Results 11 to 20 of about 1,481 (132)
Effects of the Ecuadorian Andes on genetic structure of the spectacled bear with new genetic datasets [PDF]
The Andes arguably contains the most important biodiversity hot spot (Tropical Andes) in the world and is home to the only extant bear (spectacled bear, Tremarctos ornatus), in South America.
Manuel Ruiz-García +3 more
doaj +2 more sources
Twins from different fathers: A heteropaternal superfecundation case report in Colombia
Heteropaternal superfecundation is an extremely rare phenomenon that occurs when a second ova released during the same menstrual cycle is additionally fertilized by the sperm cells of a different man in separate sexual intercourse.
Fernanda Mogollón +3 more
doaj +1 more source
Tell Me How Much DNA You Have and I'll Tell You What Your Sex Is: Sex Determination by Flow Cytometry of Spiderlings of <i>Allocosa marindia</i>. [PDF]
The manuscript addresses the sex determination of spiderlings of the wolf spider Allocosa marindia using flow cytometry. Spiders are born with a defined sex, but it is not possible to determine their sex phenotypically until the adult or near‐adult stage. Sex identification at early stages of development is of great interest for studies in evolutionary
Bidegaray-Batista L +4 more
europepmc +2 more sources
Las especies domesticadas, han sido expuestas durante su evolución a presiones que ocurrieron a diferentes intensidades y regulan la variación de la estructura genética, fenotípica y la divergencia entre poblaciones cultivadas y silvestres.
Juan Manuel Peñaloza Ramirez +4 more
doaj +1 more source
Aratus pisonii is one of the most common crab species in Neotropical mangroves. It shows great plasticity in its life history traits, which makes it an interesting subject for comparative studies. This study evaluated the morphometric variability in five
Beatriz López-Sánchez +2 more
doaj +1 more source
En la mayoría de los casos, la diferenciación sexual masculina ocurre con la participación del gen SRY. Sin embargo, se pueden presentar otros genotipos excepcionales, como en el caso que se presenta en este reporte.
Andrea Casas-Vargas +5 more
doaj +1 more source
Mitochondrial DNA diversity in prehispanic bone remains on the eastern Colombian Andes
Introduction: DNA extracted from ancient human bones allows to analyze the genetic makeup of pre-Columbian populations and to determine the dynamics that gave rise to the diversity of contemporary populations.
Andrea Casas-Vargas +7 more
doaj +1 more source
Mauritia flexuosa es una especie vegetal amazónica que forma extensas poblaciones denominadas “aguajales”. Como los pobladores amazónicos emplean varios órganos de M.
Jorge Angulo Quintanilla +6 more
doaj +3 more sources
Se analizó la estructura genética del árbol tropical Dendropanax arboreus (Araliaceae) en relación con la fragmentación del hábitat en la selva tropical de Los Tuxtlas, Veracruz, México.
Elsa M. Figueroa Esquivel +3 more
doaj +1 more source
Caracterización genética y ambiental de poblaciones de Abies alba Mill. en su retaguardia occidental
Se ha caracterizado la estructura genética de diez poblaciones de Abies alba en la retaguardia occidental de su distribución en el Pirineo español en comparación con dos poblaciones de Alemania, buscando la influencia de factores climáticos en el ...
D. Sancho-Knapik +7 more
doaj +1 more source

