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  • genes
  • Several CPI sex-determining genes mapped to five chromosomes, and homology was detected between yet other CPI autosomes and the globally nonhomologous sex chromosomes of chicken, other turtles, and squamates, underscoring the independent evolution of vertebrate sex-determining mechanisms. (iastate.edu)
  • A subsequent combination of BAC-FISH with BAC probes containing anticipated neighbouring Z-linked genes and TSA-FISH with the Ace-1 probe allowed the integration of Ace-1 in the physical map of the codling moth Z chromosome. (biomedcentral.com)
  • We also developed a two-colour TSA-FISH protocol which enabled us simultaneous localization of two Z-linked genes, Ace-1 and Notch , to the expected regions of the Z chromosome. (biomedcentral.com)
  • We showed that TSA-FISH represents a reliable technique for physical mapping of genes on chromosomes of moths and butterflies. (biomedcentral.com)
  • Along with this delay in replication timing, estimated to be 2-3 hr, the majority of genes become transcriptionally silenced on one X chromosome. (jove.com)
  • These genes, AOP2 and AOP3 , which map to the same position on chromosome IV, result from an apparent gene duplication and control the conversion of methylsulfinylalkyl glucosinolate to either the alkenyl or the hydroxyalkyl form. (plantcell.org)
  • Thermal response of epigenetic genes informs turtle sex determination with and without sex chromosomes. (iastate.edu)
  • These data, along with the similar distribution seen in birds, suggest that imprinted genes were not located on an ancestrally imprinted chromosome or associated with a sex chromosome. (biomedcentral.com)
  • Imprinted genes are expressed from one of the two parentally inherited chromosome homologues and repressed on the other. (biomedcentral.com)
  • gene
  • Ammiraju JS, Veremis JC, Huang X, Roberts PA, Kaloshian I (2003) The heat-stable root-knot nematode resistance gene Mi-9 from Lycopersicon peruvianum is localized on the short arm of chromosome 6. (springer.com)
  • It is one of the richest chromosomes in terms of G+C and gene content. (biomedcentral.com)
  • Changes in spine length are controlled in part by a quantitative trait locus (QTL) previously mapped to chromosome 4, but the causative gene and mutations underlying the repeated evolution of this interesting skeletal trait have not been identified. (beds.ac.uk)
  • The gene is linked to a separate gene controlling bony plate loss, helping explain the concerted effects of chromosome 4 on multiple armor-reduction traits. (beds.ac.uk)
  • Using a modified TSA-FISH protocol we successfully mapped a partial sequence of the Acetylcholinesterase 1 ( Ace-1 ) gene to the Z chromosome and confirmed thus its Z-linkage. (biomedcentral.com)
  • Instead of scientists patching a gene here and a gene there, they would use chemicals to manufacture all the DNA contained in human chromosomes. (gizmodo.co.uk)
  • loci
  • The linkage map incorporates 508 segregating loci and represents each of the 28 chromosome pairs of octoploid strawberry, spanning an estimated length of 2050 cM. (beds.ac.uk)
  • lanatus had one 45S rDNA locus and two 5S rDNA loci, each located on a different chromosome. (biomedcentral.com)
  • organization
  • For example, DNA replication, transcription, repair, and chromosome organization are governed by DNA-binding proteins that recognize specific DNA structures or sequences. (jove.com)
  • homologues
  • Individual CTs were found to be associated at random frequency, except for the homologues of the nucleolar organizer region (NOR) chromosomes 2 and 4. (uni-halle.de)
  • inactivation
  • In addition, a discrete cis-acting locus, known as the X inactivation center, regulates this X inactivation process, including the induction of delayed replication timing on the entire inactive X chromosome. (jove.com)
  • There are several theories to account for how the mechanism evolved including the hypothesis that it was driven by the evolution of X-inactivation, or that it arose from an ancestrally imprinted chromosome. (biomedcentral.com)
  • genomes
  • Using this diagnostic probe mix and a BAC that contained a C-genome repeat in two successive hybridizations allowed for routine identification of the corresponding homoeologous chromosomes between the A and C genomes of B. napus . (genetics.org)
  • hypotheses
  • Other hypotheses focus on differences in chromosome cores and cohesins, SC structure in heterochromatin compared to euchromatin, underrepresentation of heterochromatin in SC length, and interference with synapsis (SC formation) in heterochromatin. (genetics.org)
  • localization
  • In the current work, we present a software package that computes localization of whole chromosomes - Image Analysis of Chromosomes for computing localization (IMACULAT). (jove.com)
  • We partition the nucleus into concentric elliptical compartments of equal area and the variance in the quantity of any chromosome in these shells is used to determine its localization in the nucleus. (jove.com)