Results 81 to 90 of about 13,896 (236)

High incidence of chromosomal abnormalities in large-headed and multiple-tailed spermatozoa [PDF]

open access: yes, 2006
Rodrigo Vivo, Lorena, lorovi@alumni.uv.es ; Prados Dodd, Nicolas, Nicolas.Prados@uv.es ; Gil Salom, Manuel Luis, Manuel.Gil-Salom@uv.es ; Remohi Gimenez, Jose Alejandro, J.Alejandro.Remohi@uv ...
Gil Salom, Manuel   +6 more
core   +2 more sources

Population Polymorphism of Nuclear Mitochondrial DNA Insertions Reveals Widespread Diploidy Associated with Loss of Heterozygosity in Debaryomyces hansenii

open access: yesEukaryotic Cell, 2010
Debaryomyces hansenii, a yeast that participates in the elaboration of foodstuff, displays important genetic diversity. Our recent phylogenetic classification of this species led to the subdivision of the species into three distinct clades. D.
N. Jacques   +5 more
semanticscholar   +1 more source

Repeated Independent Formation of Triploid Lineages Contributes to Clonal Diversity in Heteronotia binoei Parthenogens

open access: yesMolecular Ecology, Volume 35, Issue 2, January 2026.
ABSTRACT Parthenogenesis, or all‐female clonal reproduction, is rare among vertebrates. This is often attributed to the selective disadvantages of assumed reduction of genetic diversity in the absence of sex. However, parthenogenetic vertebrates have highly complex evolutionary histories, with most arising through hybridisation and many being polyploid.
Kate E. O'Hara   +4 more
wiley   +1 more source

Under-dominance constrains the evolution of negative autoregulation in diploids [PDF]

open access: yes, 2013
Regulatory networks have evolved to allow gene expression to rapidly track changes in the environment as well as to buffer perturbations and maintain cellular homeostasis in the absence of change.
Pomiankowski, A   +3 more
core  

Comparative Genomics of the Endosymbiont Cardinium Causing Reproductive Manipulation in Encarsia Parasitoid Wasps

open access: yesMicrobiologyOpen, Volume 14, Issue 6, December 2025.
We assembled four Cardinium hertigii draft genomes: cEina3 causes cytoplasmic incompatibility, cEhis1 induces parthenogenesis, cEper2 is associated with parthenogenesis, and cEina2 infects asymptomatically. All four strains are closely related and hosted by Encarsia parasitoid wasps, but key differences exist, including their metabolic potential and ...
Dylan L. Schultz   +6 more
wiley   +1 more source

Learning the dominance in diploid genetic algorithms for changing optimization problems [PDF]

open access: yes, 2007
Using diploid representation with dominance scheme is one of the approaches developed for genetic algorithms to address dynamic optimization problems.
Yang, S
core  

On the performance of a hybrid genetic algorithm in dynamic environments [PDF]

open access: yes, 2013
The ability to track the optimum of dynamic environments is important in many practical applications. In this paper, the capability of a hybrid genetic algorithm (HGA) to track the optimum in some dynamic environments is investigated for different ...
Yang, Zhixin, Yuan, Quan
core   +3 more sources

Genetical evidence for diploidy in Phytophthora

open access: yesGenetical Research, 1971
SUMMARYA spontaneous mutant of Phytophthora drechsleri, resistant to p-fluorophenyl-alanine and two induced mutants resistant to chloramphenicol have been selected and analysed. The pattern of inheritance of the mutant phenotypes was identical and conformed to that expected in a diploid organism.
David S. Shaw, Ikram A. Khaki
openaire   +1 more source

Sexual conflict as a constraint on asexual reproduction: an empirical review

open access: yesBiological Reviews, Volume 100, Issue 6, Page 2681-2706, December 2025.
ABSTRACT Theory predicts that facultatively asexual animals, which can leverage the advantages of both sexual and asexual reproduction, should outcompete obligately sexual and obligately asexual animals. Yet, paradoxically, obligate sexual reproduction predominates in many animal lineages, while the most flexible form of facultative asexuality (i.e ...
Daniela Wilner   +2 more
wiley   +1 more source

The Chromosome Number of Schaffnerella Gracilis (Gramineae, Chloridoideae) [PDF]

open access: yes, 2002
The first ever chromosome report for the monotypic genus Schaffnerella (Grarnineae, Chloridoideae) is 2n = 20 (10 II) from pollen parent cells at diakinesis, which indicates diploidy and a base number of 10. The close relative Lycurus likewise has x = 10,
Columbus, J. Travis   +1 more
core   +3 more sources

Home - About - Disclaimer - Privacy