نتایج جستجو برای: karyotypes
تعداد نتایج: 2436 فیلتر نتایج به سال:
Examining species boundaries using data from multiple independent sources is an appropriate and robust method to identify genetically isolated evolutionary units. We used 5 data sets—cytochrome b (Cytb), cytochrome c oxidase (COI), amplified fragment length polymorphisms (AFLPs), karyotypes, and morphology—to estimate phylogenetic relationships and species limits within woolly bats, genus Keriv...
Previous work has shown thorax length to be under directional selection in the Drosophila buzzatii population of Carboneras. In order to predict the genetic consequences of natural selection, genetic variation for this trait was investigated in two ways. First, narrow sense heritability was estimated in the laboratory F2 generation of a sample of wild flies by means of the offspring-parent regr...
Critically short telomeres promote chromosomal fusions, which in TP53-defective cells initiate the formation of cytogenetic aberrations that are typical of human cancer cells. Expression of the enzyme telomerase stabilizes normal and aberrant chromosomes by maintaining telomere length. However, previous investigations, including our own, have shown that overexpression of telomerase reverse tran...
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