Results 31 to 40 of about 18,943 (253)

The meiotic behavior of an inversion in Caenorhabditis elegans. [PDF]

open access: yesGenetics, 1992
Abstract The rearrangement hIn1(I) was isolated as a crossover suppressor for the right end of linkage group (LG) I. By inducing genetic markers on this crossover suppressor and establishing the gene order in the homozygote, hIn1(I) was demonstrated to be the first genetically proven inversion in Caenorhabditis elegans.
M C, Zetka, A M, Rose
openaire   +2 more sources

Meiosis-specific loading of the centromere-specific histone CENH3 in Arabidopsis thaliana. [PDF]

open access: yesPLoS Genetics, 2011
Centromere behavior is specialized in meiosis I, so that sister chromatids of homologous chromosomes are pulled toward the same side of the spindle (through kinetochore mono-orientation) and chromosome number is reduced.
Maruthachalam Ravi   +6 more
doaj   +1 more source

Meiotic Behaviors of Allotetraploid Citrus Drive the Interspecific Recombination Landscape, the Genetic Structures, and Traits Inheritance in Tetrazyg Progenies Aiming to Select New Rootstocks

open access: yesPlants, 2023
Sexual breeding at the tetraploid level is a promising strategy for rootstock breeding in citrus. Due to the interspecific origin of most of the conventional diploid citrus rootstocks that produced the tetraploid germplasm, the optimization of this ...
Lény Calvez   +10 more
doaj   +1 more source

On the origin of crossover interference : a chromosome oscillatory movement (COM) model [PDF]

open access: yes, 2011
Background: It is now nearly a century since it was first discovered that crossovers between homologous parental chromosomes, originating at the Prophase stage of Meiosis I, are not randomly placed.
Maj A Hultén   +2 more
core   +1 more source

Somaclonal variation in Asparagus officinalis plants regenerated by organogenesis from long-term callus cultures

open access: yesGenetics and Molecular Biology, 2005
Somaclonal variation in plants regenerated by organogenesis from long-term cultured calluses of two diploid staminate genotypes of Asparagus officinalis cv.
Ana Clara Pontaroli, Elsa Lucila Camadro
doaj   +1 more source

Meiotic drive and evolution of female choice

open access: yes, 1999
Reinhold K, Engqvist L, Misof B, Kurtz J. Meiotic drive and evolution of female choice. Proceedings of the Royal Society B. 1999;266(1426):1341-1345.As a special version of the good-genes hypothesis, it was recently proposed that females could benefit ...
Reinhold, Klaus   +11 more
core   +1 more source

Meiotic behavior and pollen fertility in triploid and tetraploid natural populations of Campuloclinium macrocephalum (Eupatorieae, Asteraceae) [PDF]

open access: yes, 2014
Campuloclinium macrocephalum DC. is a perennial herb widely distributed in the New World and introduced in South Africa, where it is commonly called ‘‘pompom weed’’.
Dematteis, Massimiliano   +1 more
core   +1 more source

Cytogenetic studies in some species of Passiflora L. (Passifloraceae): a review emphasizing Brazilian species

open access: yesBrazilian Archives of Biology and Technology, 2008
The Passifloraceae is represented by species of tropical and subtropical origin. The Passiflora is the richest genus with approximately 450 species, 200 of them being native to Brazil. Recent karyological studies have reported the basic chromosome number
Margarete Magalhães Souza   +2 more
doaj   +1 more source

Phenotypic, cytogenetic and spike fertility characterization of a population of male-sterile triticale

open access: yesScientia Agricola, 2013
Triticale (X Triticosecale Wittmack) is a good cereal for production of flour and feed. A segregating population of triticale was developed from a male-sterile (MS) plant. To determine whether this new source of male sterility in triticale is appropriate
Divanilde Guerra   +2 more
doaj   +1 more source

A sex-ratio meiotic drive system in Drosophila simulans. II: an X-linked distorter. [PDF]

open access: yesPLoS Biology, 2007
The evolution of heteromorphic sex chromosomes creates a genetic condition favoring the invasion of sex-ratio meiotic drive elements, resulting in the biased transmission of one sex chromosome over the other, in violation of Mendel's first law.
Yun Tao   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy