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Further Evidence of Chromosome Abnormalities in Normal and Haploid Gynogenetic Progenies of Rainbow Trout, Oncorhynchus mykiss
(1996)
Gynogenetic haploid progenies of rainbow trout, produced using UV light for sperm
inactivation, were studied in comparison with normal progenies. In a total of 437 normal embryos,
3.5% of them showed chromosome abnormalities: ...
Editorial- Volumen 35 -Número 2La Pedagogía reproductivaThe Reproductive PedagogyA Pedagogia reprodutiva
(Corporación Universidad de la Costa, 2020)
Microtubule configuration and its relationship to sperm morphology in mammalian spermiogenesis
(2008)
The acrosome is a secretory vesicle located in the mammalian sperm head. Its main function is to transport hydrolytic enzymes. These enzymes will dissolve the zona pellucid, assisting the sperm in fertilizing the egg. The ...
Testing the effects of heterozygosity on growth rate plasticity in the seaweed Gracilaria chilensis (Rhodophyta)
(Wiley, 2018-06)
Heterozygosity has been positively associated with fitness and population survival. However, the relationship between heterozygosity and adaptive phenotypic plasticity (i.e., plasticity which results in fitness homeostasis ...
Identificación de metodologías para la evaluación de tolerancia a temperaturas bajas en arroz (oryza sativa l.)
(Universidad Nacional de Colombia Sede Palmira, 1989-01-01)
En el presente trabajo se identificaron metodologías para evaluar tolerancia a temperaturas bajas del arroz en las etapas de semilla seca esterilizada (se colocaron 50 semillas en una caja de Petri y se sometieron a 13°C ...
Karyological study in fifteen Leucocoryne taxa (Alliaceae)
(2012)
The karyotype of fifteen Leucocoryne taxa was studied, assessing characteristics such as chromosome morphology and size, secondary constriction location, and asymmetry level. Two groups of Leucocoryne taxa were described ...
A gene family encoding heterogeneous histone H1 proteins in Trypanosoma cruzi
(1994)
A gene family encoding a set of histone H1 proteins in Trypanosoma cruzi is described. The sequence of 3 genomic and 4 cDNA clones revealed the presence of several motifs characteristic of histone H1 although heterogeneity ...
BRDT is an essential epigenetic regulator for proper chromatin organization, silencing of sex chromosomes and crossover formation in male meiosis
(Public Library Science, 2018)
The double bromodomain and extra-terminal domain (BET) proteins are critical epigenetic
readers that bind to acetylated histones in chromatin and regulate transcriptional activity
and modulate changes in chromatin structure ...
Apoptosis, necrosis and autophagy are influenced by metabolic energy sources in cultured rat spermatocytes
(2012)
Apoptosis, necrosis and autophagy are mechanistically related processes that control tissue homeostasis and cell survival. In the testis, germ cell death is important for controlling sperm output, but it is unknown whether ...