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  • somatic
  • Study of the maize ( Zea mays L.) somatic chromosomes (2 n = 20) has been difficult because of a lack of distinguishing characteristics. (pnas.org)
  • However, the identification of somatic chromosomes has been difficult because the highly condensed chromatin structure conceals the fine details that are used for chromosome identification at the pachytene stage, such as cytologically observable knobs, heterochromatic regions, arm ratios, and total chromosome length ( 5 ). (pnas.org)
  • Screening was carried out on random PCR libraries to recover sequences that were used as FISH probes to identify the somatic chromosomes. (pnas.org)
  • download late war u.s. tanks ' Kracauer's old presentation lasts not identified in the 24 images happened in the somatic karyotypic short trade of The Mass Ornament. (polishnationalhome.com)
  • Benirschke K, Brownhill LE, Beath MM (1962) Somatic chromosomes of the horse, the donkey and their hybrids, the mule and the hinny. (springer.com)
  • breakpoints
  • Both of these genomic structures coincide with breakpoints in the genus Mus , suggesting that the accumulation of a large number of repeats in the centromeric region may contribute to the high level of chromosome repatterning observed in this group. (biomedcentral.com)
  • hybridization
  • To identify all maize chromosomes, a multicolor fluorescence in situ hybridization procedure was developed. (pnas.org)
  • These three probes, plus centromeric satellite 4 (Cent4), centromeric satellite C (CentC), knob, nucleolus-organizing region (NOR), pMTY9ER telomere-associated sequence, and tandemly repeated DNA sequence 1 (TR-1) were used as a mixture for hybridization to root-tip chromosomes. (pnas.org)
  • In this context, we comparatively mapped ribosomal RNA and histone gene families on the chromosomes of Mytilus edulis, M. galloprovincialis , M. trossulus and M. californianus by fluorescent in situ hybridization (FISH). (biomedcentral.com)
  • Hybridization-facilitated genome merger and repeated chromosome fusion after eight million years. (nih.gov)
  • cladistic analysis
  • Using both a chromosome-based cladistic analysis as well as by mapping of chromosomal differences onto a molecular-based phylogenetic tree, we revealed a number of potential cytogenetic signatures that support the clade of Pandionidae (PHA) + Accipitridae. (beds.ac.uk)
  • cytogenetic
  • However, the overall response to this effort has been rather limited due to the current cytogenetic practice, in which the main effort is the documentation of recurrent or "clonal chromosome aberrations," or CCAs. (biomedcentral.com)
  • We conducted a molecular cytogenetic analysis to characterize the sex chromosomes of T. muenninki . (springer.com)
  • In maize ( Zea mays L., 2 n = 20) pachytene chromosomes have been used extensively for karyotyping and cytogenetic analyses. (pnas.org)
  • According to this study, the facial cancers of five male individuals bore no detectable cytogenetic similarities to DFT1, yet in all five tumors similarly rearranged chromosomes were present. (thewinnower.com)
  • The extremely rapid karyotypic diversification in perissodactyls has so far prevented the establishment of genome-wide homology maps between these three families by traditional cytogenetic approaches. (springer.com)
  • Genomic
  • We argue that the chromosome number decrease mediated by inter-genomic reshuffling (diploidization) could provide the Pachycladon allopolyploid founder with an adaptive advantage to colonize montane/alpine habitats. (biomedcentral.com)
  • molecular
  • The Micronycterinae form a subfamily of leaf-nosed bats (Phyllostomidae) that contains the genera Lampronycteris Sanborn, 1949, and Micronycteris Gray, 1866 ( stricto sensu), and is characterized by marked karyotypic variability and discrepancies in the phylogenetic relationships suggested by the molecular versus morphological data. (biomedcentral.com)
  • sequences
  • The procedure uses tandemly repeated DNA sequences to generate a distinctive banding pattern for each of the 10 chromosomes. (pnas.org)
  • The results obtained suggest that at least some of the chromosomes bearing these sequences are orthologous and that chromosomal mapping of rRNA and histone gene clusters could be a good tool to help deciphering some of the many unsolved questions in the systematic classification of Mytilidae. (biomedcentral.com)
  • fluorescent
  • These probes, coupled with changes in the chromosome-preparation procedure that improve fluorescent signal detection, allowed the development of a FISH karyotyping method that is effective on all tested maize lines. (pnas.org)
  • microchromosomes
  • However, the number of synteny association events and identities of microchromosomes involved in such synteny associations remain undefined, due to the lack of paint probes derived from individual chicken microchromosomes. (beds.ac.uk)
  • However, crocodile chromosomes are different from those of birds and turtles that have numerous indistinguishable microchromosomes, and the chromosome GC content is unknown in CNI. (royalsocietypublishing.org)
  • rDNA
  • In all Mytilus two of the 5S rDNA clusters mapped to the same chromosome pair and one of them showed overlapping signals with those corresponding to one of the histone H1 gene clusters. (biomedcentral.com)
  • Additionally, M. trossulus showed minor and major rDNA clusters on the same chromosome pair. (biomedcentral.com)
  • abnormalities
  • Thymocytes from ATM-deficient mice have an increased frequency of biallelic loss of distal Vα gene segments, and 11% of nontransformed αβ T cells in these mice have karyotypic abnormalities involving chromosome 14, which contains the TCRα/δ locus ( 17 , 18 ). (rupress.org)
  • complement
  • Benirschke K, Malouf N, Low RJ, Heck H (1965) Chromosome complement differences between Equus caballus and Equus przewalskii , Poliakoff. (springer.com)
  • aberrations
  • Why it is crucial to analyze non clonal chromosome aberrations or NCCAs? (biomedcentral.com)
  • Current cytogenetics has largely focused its efforts on the identification of recurrent karyotypic alterations, also known as clonal chromosomal aberrations (CCAs). (biomedcentral.com)
  • The rationale of doing so seems simple: recurrent genetic changes are relevant for diseases or specific physiological conditions, while non clonal chromosome aberrations (NCCAs) are insignificant genetic background or noise. (biomedcentral.com)
  • This study discovered three novel chromosomal aberration findings not previously documented before in the Mitelman Database of Chromosome Aberrations in Cancer. (hkmj.org)
  • morphology
  • Studies of marsupial chromosome number, morphology and G-banding revealed an astonishing level of conservation across the entire infraclass of Metatheria. (beds.ac.uk)