Dessa är ordets examples relaterade till homologous-chromosomes. Klicka på valfritt ord för att gå till dess ords detaljsida. Eller, gå till definitionen av homologous-chromosomes.
The first of these divisions is initiated in fetal life but the all important segregation of paired homologous chromosomes takes place after puberty.
The first requirement is for close pairing of homologous chromosomes, followed by recombination between non-sister chromatids.
The population of 1000 lines provided a first test of the feasibility of assembling a map with both simplex and duplex markers linking the homologous chromosomes.
Heterozygosity for an inversion induces a loop structure in paired homologous chromosomes and thus inversions are easy to detect cytologically.
Homologues separate, the first polar body is extruded and an interphase pronucleus' carrying one set of homologous chromosomes reforms.
After oocyte activation, homologous chromosomes segregate between the oocyte and the first polar body, and a diploid pronucleus-like nucleus reforms from the one set of dyads.
First, to achieve proper segregation, each pair of homologous chromosomes must be linked to each other to maintain a certain level of tension between them.
Balancer chromosomes can be used as a genetic tool to prevent crossing over (genetic recombination) between homologous chromosomes during meiosis.
Bivalents are formed as two homologous chromosomes undergo recombination.
The infinitesimal model reduces to the continuum of alleles model if there is no recombination between homologous chromosomes.
The recessive mutation tufted was used as a reliable genetic marker to trace transmission of the homologous chromosomes.
These events include the migration of the spindle, disassembly of microtubules, the separation of homologous chromosomes, and the formation and extrusion of the polar body.
This implies that diploid individuals tend to ' mask ' deleterious mutations with ' normal ' alleles carried on the homologous chromosomes.
We further suggest that selection may act on the difference in size between the two alleles borne by homologous chromosomes in a diploid individual.
Two molecular processes generating variability have been proposed : replication slippage due to slipped-strand mispairing and unequal recombination between homologous chromosomes (or chromatids).
