• Microsatellites are often referred to as short tandem repeats (STRs) by forensic geneticists and in genetic genealogy, or as simple sequence repeats (SSRs) by plant geneticists. (wikipedia.org)
  • The SSRs were categorized for the numbers of repeats present, their overall length and were allocated to their linkage group. (researchgate.net)
  • A total of 4,761 perfect and 6,583 imperfect SSRs were present in 3,781 genes (14.11% of the total), corresponding to an overall density across the gene space of 32,5 and 44,9 SSRs/Mbp for perfect and imperfect motifs, respectively. (researchgate.net)
  • We report these two new plastid genome sequences and make comparisons (within angiosperms, seed plants, or all photosynthetic lineages) to evaluate features such as the status of ycf15 and ycf68 as protein coding genes, the distribution of simple sequence repeats (SSRs) and longer dispersed repeats (SDR), and patterns of nucleotide composition. (biomedcentral.com)
  • In broader comparisons, SSRs vary among genomes in terms of abundance and length and most contain repeat motifs based on A and T nucleotides. (biomedcentral.com)
  • SSRs occur less frequently than predicted and, although the majority of the repeat motifs do include A and T nucleotides, the A+T bias in SSRs is less than that predicted from the underlying genomic nucleotide composition. (biomedcentral.com)
  • Thus, the mutation rate at microsatellite loci is expected to differ from other mutation rates, such as base substitution rates. (wikipedia.org)
  • The mutation rate at microsatellite loci depends on the repeat motif sequence, the number of repeated motif units and the purity of the canonical repeated sequence. (wikipedia.org)
  • The final consensus maps are based on 1578 microsatellite loci and these maps have a cumulative length of approximately 1400 cM after adjustment for recombination frequencies of RI strains. (nervenet.org)
  • 1992). A microsatellite is a tract of tandemly repeated (i.e. adjacent) DNA motifs that range in length from one to six or up to ten nucleotides (the exact definition and delineation to the longer minisatellites varies from author to author), and are typically repeated 5-50 times. (wikipedia.org)
  • citation needed] Unlike point mutations, which affect only a single nucleotide, microsatellite mutations lead to the gain or loss of an entire repeat unit, and sometimes two or more repeats simultaneously. (wikipedia.org)
  • They are also used in genetic linkage analysis to locate a gene or a mutation responsible for a given trait or disease. (wikipedia.org)
  • from the mutation of a single gene. (scirp.org)
  • YBM12-A and YBM12-B). This mutation in leaf color is controlled by a single dominant nuclear gene. (geneticsmr.com)
  • Huntington's disease (HD) is an autosomal dominant progressive neurodegenerative disorder caused by a dynamic mutation due to the expansion of CAG repeats in the HTT gene (4p16.3). (geneticsmr.com)
  • Microsatellites occur at thousands of locations within an organism's genome. (wikipedia.org)
  • Microsatellites are distributed throughout the genome. (wikipedia.org)
  • The human genome for example contains 50,000-100,000 dinucleotide microsatellites, and lesser numbers of tri-, tetra- and pentanucleotide microsatellites. (wikipedia.org)
  • In the majority of angiosperm chloroplast genomes two copies of a large inverted repeat (IR) of about 25 kb separate the remainder of the genome into two regions of unique DNA, the large (about 90 kb) and small (about 20 kb) single copy regions (LSC and SSC, respectively). (biomedcentral.com)
  • Other microsatellites are located in regulatory flanking or intronic regions of genes, or directly in codons of genes - microsatellite mutations in such cases can lead to phenotypic changes and diseases, notably in triplet expansion diseases such as fragile X syndrome and Huntington's disease. (wikipedia.org)
  • REVIEW-ARTICLE Intermediate alleles of Huntington's disease HTT gene in different populations worldwide: a systematic review. (geneticsmr.com)
  • of tandem repeats within their genomes [6, 17]. (scirp.org)
  • The Nuphar [GenBank:NC_008788] and Ranunculus [GenBank:NC_008796] plastid genomes share characteristics of gene content and organization with many other chloroplast genomes. (biomedcentral.com)
  • Like other plastid genomes, these genomes are A+T-rich, except for rRNA and tRNA genes. (biomedcentral.com)
  • A microsatellite is a tract of repetitive DNA in which certain DNA motifs (ranging in length from one to six or more base pairs) are repeated, typically 5-50 times. (wikipedia.org)
  • Repeat units of four and five nucleotides are referred to as tetra- and pentanucleotide motifs, respectively. (wikipedia.org)
  • Similarly, insects have shorter repeat motifs in their telomeres that could arguably be considered microsatellites. (wikipedia.org)
  • Molecular markers are important for estimating genetic diversity in germplasm and between genotypes in breeding programs. (geneticsmr.com)
  • The increasing availability of DNA amplification by PCR at the beginning of the 1990s triggered a large number of studies using the amplification of microsatellites as genetic markers for forensic medicine, for paternity testing, and for positional cloning to find the gene underlying a trait or disease. (wikipedia.org)
  • Pseudomolecules as well as unmapped scaffolds were used for the bulk mining of SSR markers and for the construction of the first globe artichoke microsatellite marker database. (researchgate.net)
  • scolymus) has been used to catalog the genome's content of simple sequence repeat (SSR) markers. (researchgate.net)
  • Diversity and genetic stability in banana genotypes in a breeding program using inter simple sequence repeats (ISSR) markers. (geneticsmr.com)
  • In this study we have increased the density of microsatellite markers 2- to 5-fold in each of several major RI sets that share C57BL/6 as a parental strain (AXB, BXA, BXD, BXH, and CXB). (nervenet.org)
  • Next-generation sequencing of the whole exome is useful for testing for multiple candidate genes simultaneously or for discovering new, rare disorders. (medlink.com)
  • Most eukaryotes have microsatellites, with the notable exception of some yeast species. (wikipedia.org)
  • For example, the sequence TATATATATA is a dinucleotide microsatellite, and GTCGTCGTCGTCGTC is a trinucleotide microsatellite (with A being Adenine, G Guanine, C Cytosine, and T Thymine). (wikipedia.org)
  • The pattern of evolution in the sequences identified as ycf15 and ycf68 is not consistent with them being protein-coding genes. (biomedcentral.com)
  • These populations originated from a common ancestor, and a rapid demographic expansion began approximately 90,000 years ago. (biomedcentral.com)
  • The natural populations from China with specific genetic characteristics enriched the gene pools of global A. thaliana collections. (biomedcentral.com)
  • In contrast, interactions between genes and the environment cannot usually be studied using conventional mapping populations in which each animal is unique. (nervenet.org)
  • The results in PAR1/PAR2 are the first large-scale studies of gene dosage in these regions, and the findings at the ASMT locus indicate that further studies of the duplication of the ASMT gene are needed in order to gain insight into its potential involvement in ASD. (biomedcentral.com)
  • Microsatellites and their longer cousins, the minisatellites, together are classified as VNTR (variable number of tandem repeats) DNA. (wikipedia.org)
  • ease or are within disease genes. (scirp.org)
  • Results of current study provided information about the molecular and morphological identification of Genus Uromastyx. (bvsalud.org)
  • Prominent early applications include the identifications by microsatellite genotyping of the eight-year-old skeletal remains of a British murder victim (Hagelberg et al. (wikipedia.org)
  • Genes in these two novel duplications include GABRB3 and ATP10A in one case, and MKRN3 , MAGEL2 and NDN in the other. (biomedcentral.com)
  • Whole exome sequencing is not suitable for detecting polynucleotide repeat disorders or large insertion/deletions. (medlink.com)
  • A partial duplication in the ASMT gene, located in the pseudoautosomal region 1 (PAR1) of the sex chromosomes and previously suggested to be involved in ASD susceptibility, was observed in 6-7% of the cases but in only 2% of controls (P = 0.003). (biomedcentral.com)
  • Two subjects showed partial duplication of the TM4SF2 gene on Xp11.4, previously implicated in X-linked non-specific mental retardation, but in our subsequent analyses such variants were also found in controls. (biomedcentral.com)
  • 2000). The main advantage in this context is that the complex genetic and epigenetic correlations among interconnected parts of the brain can be explored using complementary molecular, developmental, structural, pharmacological, and behavioral techniques. (nervenet.org)