Filters: Tags: Heterozygosity (X)27 results (119ms)
Genetic differentiation and heterozygosity in pinyon pine associated with resistance to herbivory and environmental stress.
Repeatability of correlations between heterozygosity, growth and survival in a natural population of the hard clam Mercenaria mercenaria L.
Isolation by distance and vicariance drive genetic structure of a coral reef fish in the Pacific Ocean
Effect of mating structure and progeny distribution on heterozygosity versus the number of alleles as measures of variation
Microsatellite evidence of facultative outcrossing in cheatgrass (Bromus tectorum): Implications for the evolution of invasiveness
The presence or absence of heterozygous individuals and overall genetic variation were determined for the invasive exotic annual grass Bromus tectorum from four populations in northern Nevada using seven species-specific polymorphic di-nucleotide microsatellite markers. Allelic polymorphisms were found in all populations, but not at all loci within each population. Mean genetic diversity across loci within populations ranged from 0.009 Â± 0.006 to 0.551 Â± 0.073, across populations xÌ„ = 0.234 Â± 0.043. Fifteen individuals from the total sample (8.24%) were heterozygous at 1â€“4 loci. Two populations exhibited no heterozygosity and the remaining two populations had relative heterozygote proportions of 22.5% and...
Morphological and genetic variation among populations of the rare Kachina daisy ( Erigeron kachinensis ) from southeastern Utah
Erigeron kachinensis, the Kachina daisy, is a rare species restricted to canyons in southeastern Utah. The species is known to exhibit low fecundity due to low percent fertilization of ovules and high percent abortion of fertilized ovules. Previous reproductive studies suggest that low fecundity is a consequence of small population size and inbreeding depression. This study examines genetic diversity within and among populations of E. kachinensis in Natural Bridges National Monument using enzyme electrophoresis. Field populations are found to have significantly different morphologies. However, morphological differences were less pronounced among populations grown in the greenhouse. The Kachina daisy exhibits levels...
Successful founder: Genetics of introduced Carduelis chloris (greenfinch) populations in New Zealand
Genetic relationships and spatial genetic structure among clonal stocks of Trypanosoma cruzi in Colombia
Genetic indicators of environmental stress in central mudminnow (Umbra limi ) populations exposed to acid deposition in the Adirondack Mountains.