نتایج جستجو برای: cytotype
تعداد نتایج: 241 فیلتر نتایج به سال:
In order to uncover patterns and processes of segregation of co-existing cytotypes, we investigated a zone in the eastern Alps (Austria) where diploid and hexaploid individuals of the alpine herb Senecio carniolicus Willd. (Asteraceae) co-occur. Linking the fine-scale distribution of cytotypes to environmental and spatial factors revealed segregation along an ecological gradient, which was also...
Hybrid dysgenesis is a syndrome of germ-line aberrations including, e.g., sterility and mutation, found in certain interstrain hybrids of Drosophila melanogaster. Previous studies of sterility have shown that elements responsible for dysgenesis may reside on all major chromosomes, but that their dysgenesis-causing ability is controlled by an unknown extrachromosomal factor. Dysgenic hybrids als...
The histone deacetylase inhibitor N¹-(ferrocenyl)-N⁸-hydroxyoctanediamide (JAHA) down-regulates extracellular-signal-regulated kinase (ERK) and its activated form in triple-negative MDA-MB231 breast cancer cells after 18 h and up to 30 h of treatment, and to a lesser extent AKT and phospho-AKT after 30 h and up to 48 h of treatment. Also, DNA methyltransferase 1 (DNMT1), 3b and, to a lesser ext...
A karyological analysis on six Italian populations the slow worm (Anguis veronensis Pollini, 1818) was performed and their genetic differentiation at the mitochondrial 16S rRNA gene fragment from a Spanish sample has been assessed. The Italian populations were karyologically uniform, all showing 2n=44 elements, of which 20 were macrochromosomes and 24 microchromosomes. Comparison with literatur...
Amana Honda (Liliaceae), known as ‘east Asian tulips’, is a spring ephemeral genus endemic to Sino-Japanese Floristic Subregion, mainly distributed in eastern and central China, Japan the Korean peninsula. Chromosome numbers are reported here for first time from 89 populations of (representing all seven accepted species, two new species about be published, suspected species). Three ploidy level...
Barriers to gene flow can result in populations evolving into separate species, and understanding how these barriers evolve is a key step the process of speciation. This study investigates major barrier flow, mortality during development, two parasitoid wasp Nasonia vitripennis Walker N. giraulti Darling. Previous work has demonstrated high haploid hybrid males species shown potential rescue fr...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید