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Topic: Chromosome



  
 Chromosome - Wikipedia, the free encyclopedia
The use of basophilic aniline dyes was a fundamentally new technique for effectively staining the chromatin material inside the nucleus.
Genetic counseling is offered for families that may carry a chromosome rearrangement.
Like many sexually reproducing species, humans have special gonosomes (sex chromosomes, in contrast to autosomes for body functions).
http://en.wikipedia.org/wiki/Chromosome   (1702 words)

  
 DNA Structure, Replication and Eukaryotic Chromatin Structure
One important aspect of genetic research is correlating changes in the karyotype with changes in the phenotype of the individual.
Because experiments that strip H1 from chromatin maintain the nucleosome, but not the 30 nm structure, it was concluded that H1 is important for the stabilization of the 30 nm structure.
One important aspect of genetics is correlating changes in karyotype with changes in phenotype.
http://www.ndsu.nodak.edu/instruct/mcclean/plsc431/eukarychrom/eukaryo3.htm   (2942 words)

  
 Introduction to Chromosomes Chromosome Deletion Outreach, Inc.
Chromosome analysis is full of exceptions and results that can be difficult to interpret.
It is to be used only for education purposes and not for the medical care of an individual.
Genes are the individual instructions that tell our bodies how to develop and keep our bodies running healthy.
http://www.chromodisorder.org/intro.htm   (2170 words)

  
 Chromosome Disorders / Family Village
This is where the NCFCI is able to make the families aware of their support systems, options and services that may available to them.
Jacqueline is a licensed registered nurse and a certified medical assistant with over 20 years experience in the medical field.
With an extensive library of available up-to-date articles, detailed registry, newsletters, research opportunities, interaction with our medical advisory board, and a listserv that’s online 24 hours a day, CDO is able to provide support and information to families around the world.
http://www.familyvillage.wisc.edu/lib_chro.htm   (810 words)

  
 Y chromosome - Wikipedia, the free encyclopedia
Researchers are not yet certain why an extra copy of the Y chromosome is associated with tall stature and learning problems in some boys and men.
Errors not caught by this technique are weeded out over time through natural selection.
For humans and some other primates, the Y chromosome is able to "recombine" with itself (see below).
http://en.wikipedia.org/wiki/Y_chromosome   (1981 words)

  
 Chromosome Pairing
The long arm alone is thus effective in prohibiting homoeologous association; but no evidence is available on the effects of the short arm alone.
Polyploid wheat has therefore evolved to behave cytologically as a diploid.
Several authors have favoured the theory that this situation has been achieved by the selective accumulation of many small changes of chromosome structure, which lead to the divergence of homoeologues.
http://www.geocities.com/RainForest/1978/Heredity/pairing.htm   (1723 words)

  
 Human and Ape Chromosomes
In some groups the poorer reproductive performance could be explained by the age structure of the flock and inbreeding depression, which probably affected the performance of some animals.
Also, since both of the chromosomes that hypothetically were fused had a centromere (the distinctive central part of the chromosome), we should see some evidence of two centromeres.
We conclude that prenatal chromosome analysis is not justified for inv(10) carriers.
http://www.gate.net/~rwms/hum_ape_chrom.html   (2885 words)

  
 CDO Chromosome Deletion Outreach, Inc.
Your support of CDO will help promote research and a better understanding of our children’s rare chromosome disorders.
Support for all those affected by any rare chromosome disorder
Our children are affected by a wide range of chromosome disorders, including deletions, duplications, trisomies, inversions, translocations, and rings.
http://www.chromodisorder.org   (204 words)

  
 Genetics Glossary Ca-Cn
A situation in which the occurrence of a crossover between any two nonsister chromatids can be shown to affect the probability of those chromatids being involved in other crossovers in the same meiosis.
The unifying theory stating that inheritance patterns may be generally explained by assuming that genes are located in specific sites on chromosomes.
The group of different chromosomes that carries the basic set of genetic information for a particular species.
http://helios.bto.ed.ac.uk/bto/glossary/c.htm   (1753 words)

  
 MedlinePlus Medical Encyclopedia: Chromosome
The Y chromosome determines the male gender, but does little else.
The father may contribute an X or a Y. Therefore, it is the father that determines the gender of the child.
DNA is also found in another part of the cell called the mitochondrion.
http://www.nlm.nih.gov/medlineplus/ency/article/002327.htm   (355 words)

  
 chromosome - OneLook Dictionary Search
Chromosome : Drug Discovery and Development [home, info]
chromosome : Alzheimer's Association Medical Glossary [home, info]
Chromosome : Ethics, Law and Science of Using New Genetic Technology in Medicine and Agriculture [home, info]
http://www.onelook.com/?w=chromosome&ls=a   (356 words)

  
 X-chromosome Dosage Compensation
Those who have since seized the high-ground of modern dosage-compensation research seem exclusively concerned with "
Compensation is a chemical mechanism, or rather, system of mechanisms, stably established in the distant past, with reference only to those particular genes which regularly existed in different doses in the two sexes, and so it continues to operate now even when we change the very conditions that must once have called it forth
Whether the pieces are large or small, or derived from one or another chromosome region, the result is the same: the genes, both those originally of the X and those of other chromosomes, still have the same dosage effects as they did in their old positions.
http://post.queensu.ca/~forsdyke/xchromos.htm   (12811 words)

  
 Wired News: Mapping an 'Unlucky' Chromosome
Chromosome seven is the home of genes associated with cystic fibrosis, deafness, several cancers and a protein that resists cancer drugs.
Understanding mutations in patients with acute leukemia can lead to designer drugs that would counteract them.
The information about the 1,150 genes they've found will advance the study of acute leukemia and a rare mental disorder called Williams-Beuren syndrome.
http://www.wired.com/news/technology/0,1282,59563,00.html   (891 words)

  
 ABNORMALITIES IN CHROMOSOME STRUCTURE
Of all the structural chromosome rearrangements, the most clinically significant is a translocation.
If there is no loss or gain of chromosomal material (a balanced rearrangement), then the individual is mentally and physically normal.
Individuals and families have been described with a translocation chromosome abnormality and a concurrent genetic condition; the genetic condition occurring because the chromosome breakpoint is in the midst of a gene.
http://www.usd.edu/med/som/genetics/curriculum/1ECHROM3.htm   (1824 words)

  
 MSN Encarta - Chromosome
Chromosome, microscopic structure within cells that carries the molecule deoxyribonucleic acid (DNA)—the hereditary material that influences the development and characteristics of each organism.
The chromosomes of nearly all eukaryotic life forms contain two important structures: centromeres and telomeres.
In mammals, birds, and some other organisms, one pair of chromosomes is not identical.
http://encarta.msn.com/encnet/refpages/RefArticle.aspx?refid=761566230   (1021 words)

  
 Chromosome definition - Medical Dictionary definitions of popular medical terms
These subtle DNA abnormalities (mutations) are responsible for many inherited diseases such as cystic fibrosis and sickle cell anemia or may predispose an individual to cancer, major psychiatric illnesses, and other complex diseases.
Most changes in DNA, however, are too subtle to be detected by this technique and require molecular analysis.
Chromosome definition - Medical Dictionary definitions of popular medical terms
http://www.medterms.com/script/main/art.asp?articlekey=14018   (382 words)

  
 Chromosomes
Location of the gene for muscle glycogen phosphorylase on human chromosome 11
These occur as homologous pairs, one member of each pair having been acquired from the gamete of one of the two parents of the individual whose cells are being examined.
It is most often studied when the cell is at metaphase of mitosis and all the chromosomes are present as dyads.
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Chromosomes.html   (821 words)

  
 Y chromosome - Hutchinson encyclopedia article about Y chromosome
Few if any differences from normal XY males exist in these individuals, although at one time they were thought to be emotionally unstable and abnormally aggressive.
The 23 pairs of chromosomes of a normal human male.
This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
http://encyclopedia.farlex.com/Y+chromosome   (370 words)

  
 Dr Chromo's school: chromosomes structure
Chromosomes, genes, genotypes and other concepts are explained in the MBN CD-ROM...
Humans have 23 pairs of chromosomes, which makes the diploid
A chromosome is the visible state of genetic material during a phase of the division of the cell
http://www.rothamsted.bbsrc.ac.uk/notebook/courses/guide/chromo.htm   (368 words)

  
 Human Chromosomes
Representation of the 23 paired chromosomes of the human male.
Chromosome: a very long DNA molecule and associated proteins, that carry portions of the hereditary information of an organism.
Each band contains millions of DNA nucleotide pairs which do not correspond to any functional structure.
http://www.accessexcellence.org/AB/GG/human.html   (189 words)

  
 chromosome
Each of these chromosome numbers is the so-called diploid number, i.e., the number found in the somatic (body) cells and in the germ cells that give rise to the gametes, or reproductive cells.
Additional search results provided by HighBeam Research, LLC.
At other times the chromosome appears as a fibrous structure, called the chromonema, consisting of accumulations (called chromomeres) of chromatin, the dye-absorbing material.
http://www.infoplease.com/ce6/sci/A0812134.html   (396 words)

  
 CarlZimmer.com
The only way a difference between the mitochondrial genes of a mother and her child can arise is if they mutate.
But natural selection of a gene is not the only force capable of making it more widespread-culture might have been responsible.
It was then relatively easy for them to study Y chromosomes from various parts of the world to see if they shared any particular mutation.
http://www.carlzimmer.com/articles/2001/articles_2001_AdamEve.html   (2229 words)

  
 Chromosome Disorders
Provides support and information to families of children affected by any chromosome 16 disorder, including partial trisomy 16 and unbalanced translocations.
Provides support and information for families having a child diagnosed with any type of rare chromosome disorder.
Mutual support for families affected by chromosome inversions.
http://www.webmd.com/hw/raising_a_family/shc29chm.asp   (358 words)

  
 Y chromosome - definition of Y chromosome in Encyclopedia
It is found in human beings and other mammals.
SRY is not the only male-determining gene in mammals, or even the most common: most non-primate mammals use a different Y-chromosome gene, UBE1, for this purpose.
In the XY sex-determination system, females have two of the same kind of sex chromosome (XX), while males have two distinct sex chromosomes (XY).
http://encyclopedia.laborlawtalk.com/Y_chromosome   (194 words)

  
 Sex Chromosomes
The choice is usually determined by the temperature at which early embryonic development takes place.
An organism whose cells vary in effective gene content and hence in the expression of a trait, is called a genetic mosaic.
Although these mice have testes, male sex hormones, and normal mating behavior, they are sterile.
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/SexChromosomes.html   (1649 words)

  
 The Y chromosome as a marker for the history and structure of human populations
Particular sub-sets of Y chromosomes may predispose to infertility, or to male-specific cancers, and thus it may be possible to identify the influence of selection on Y haplotypes (19 - 21), as we have done for one class of XX male (22).
The human Y chromosome determines maleness by causing the development of the testis.
MSY1 has very many alleles (useful in population genetic, forensic [3 - 5], and genealogical studies), and the structures of these suggest the action of remarkable and novel mutation processes in the evolution of the locus (6).
http://www.le.ac.uk/genetics/maj4/project.html   (1397 words)

  
 genome.gov Talking Glossary: "chromosome"
Different kinds of organisms have different numbers of chromosomes.
Each parent contributes one chromosome to each pair, so children get half of their chromosomes from their mothers and half from their fathers.
Eric Green, of the National Human Genome Research Institute's Genome Technology Branch, defines chromosome.
http://www.genome.gov/glossary.cfm?key=chromosome   (105 words)

  
 Human Genome Landmarks Poster
Click on any chromosome below to see a list of selected traits and disorders associated with that chromosome.
These regions reflect the unique patterns of light and dark bands seen on human chromosomes that have been stained to allow viewing through a light microscope.
The Human Genome Landmarks poster is a 24" by 36" wall poster that lists selected genes, traits, and disorders associated with each of the 24 different human chromosomes.
http://www.ornl.gov/sci/techresources/Human_Genome/posters/chromosome/chooser.shtml   (383 words)

  
 The Cell Nucleus II
These modifications create a banding pattern that can be used to identify and characterize individual chromosomes.
A more precise way to identify genetic sequences and genes is via a technique called "Fluorescence In situ Hybridization" or FISH.
This involves the use of DNA or oligonucleotides complementary to a nucleotide sequence on the chromosomes.
http://cellbio.utmb.edu/cellbio/nucleus2.htm   (1412 words)

  
 The Physical Map of Candida Albicans
The extensive heterozygosity found in strain SC5314, whose genome was sequenced, may have important biological consequences.
The chromosomes are color-coded to make it easier to visualize the translocations.
albicans is a diploid organism which has eight sets of homologous chromosomes.
http://albicansmap.ahc.umn.edu   (467 words)

  
 Human Chromosome Launchpad
This site is provided as a single-source launchpad to information about each human chromosome.
Each chromosome page provides links to gene maps, sequences, associated genetic disorders, nonhuman genetic models, identified genes, research efforts and laboratories, and other information as available.
Choose databases and other information resources by "pointing and clicking" on one of the pictured chromosomes or by using the list of links below.
http://www.ornl.gov/hgmis/launchpad   (159 words)

  
 Acrocentric chromosome definition - Medical Dictionary definitions of popular medical terms
The "acro-" in acrocentric comes from the Greek "akron" meaning "the end." Humans have 5 pairs of acrocentric chromosomes.
Acrocentric chromosome definition - Medical Dictionary definitions of popular medical terms
Please consult your healthcare provider before beginning any course of supplementation or treatment.
http://www.medterms.com/script/main/art.asp?articlekey=2123   (208 words)

  
 NPR : As Y Chromosome Shrinks, End of Men Pondered
The 22 other chromosomes in human cells are matched pairs, shared by men and women.
That means that many of the genes on the Y chromosome do occur as pairs.
All Things Considered, December 13, 2004 · It takes a man to carry a Y chromosome, and it takes the Y chromosome to make sperm, which is necessary for human reproduction.
http://www.npr.org/templates/story/story.php?storyId=4225769   (661 words)

  
 MedlinePlus Medical Encyclopedia: Fragile X syndrome chromosome analysis
It is usual to repeat a fragile X study performed earlier by chromosomal analysis with the molecular analysis that is now the standard of care.
This test invloves a specific analysis of white blood cells, looking for a certain deformity in the X chromosome, which carries genetic information.
MedlinePlus Medical Encyclopedia: Fragile X syndrome chromosome analysis
http://www.nlm.nih.gov/medlineplus/ency/article/003413.htm   (784 words)

  
 LLNL Human Genome Center
In the last year, the primary emphasis of our Livermore Center activities has been on high-throughput sequencing, shotgun sequencing technology development, and functional genomics.
This chromosome is GC-rich (and thus, potentially gene-rich) and contains a large number of clustered gene families, several of which are targets for genomic sequencing.
Sequence analysis of a variety of regions from chromosome 19 indicate that it is indeed gene-rich, even in regions expected to be gene-poor due to a paucity of genetic markers.
http://bbrp.llnl.gov/bbrp/genome/genome.html   (321 words)

  
 Chromosome 22 Central
I want to learn about chromosome 22 disorders
Registered members receive our newsletter and can choose to be listed in our parent registry.
Chromosome Rearrangements Not As Random As Believed --Genetic Predisposition May Raise Risk of Rare Disabling Syndrome--(Re; Emanuel Syndrome, t(11;22)
http://www.around.ntl.sympatico.ca/~a815/chr22.htm   (345 words)

  
 Chromosome Structure
In mitosis, the chromosomes appear as the thick rod-shaped bodies which can be stained and visualized under light microscopy.
The modern way to visualize condensed chromosomes is by
By using FISH probes with different colored fluorophores, one can color each human chromosome independently, and thus identify all 23 chromosomes.
http://biology.kenyon.edu/courses/biol114/Chap01/chrom_struct.html   (384 words)

  
 Chromosome@net
Search and so on) with a key word "shignak".
net has a connection with the journal Chromosome Research.
Chromosome WebWatch / Web sites for Chromosome Researchers
http://cse.nias.affrc.go.jp/shignak/chromosome.net/index2.html   (121 words)

  
 Chromosome Help-Station: For people with rare chromosome disorders
Chromosome Help-Station: For people with rare chromosome disorders
to support and advise people with rare chromosome disorders,
This website started April 06, 2002 by the Chromosome Help-Station
http://www.chromosomehelpstation.com   (27 words)

  
 Chromosomes
Chromosome 18 Registry & Research Society - San Antonio, TX
http://www.bioscience.org/urllists/chromos.htm   (43 words)

  
 Y Chromosome Evidence for Anglo-Saxon Mass Migration -- Weale et al. 19 (7): 1008 -- Molecular Biology and Evolution
Y Chromosome Evidence for Anglo-Saxon Mass Migration -- Weale et al.
Y chromosome haplotypes and testicular cancer in the English population
Previous studies of mtDNA and Y chromosome variation across
http://mbe.oxfordjournals.org/cgi/content/full/19/7/1008   (5856 words)

  
 Unique - Rare Chromosome Disorder Support Group - www.RareChromo.org
Unique is a source of information, mutual support and self-help to families of children with any rare chromosome disorders including deletions, trisomy, balanced translocations, unbalanced translocations, rings, inversions, duplications, tetrasomy, monosomy, triploidy, isodicentric, marker, mosaic, sex chromosome aneuploidy (e.g.
The purpose of this web site is to describe the Unique Rare Chromosome Disorder Support Group and how to contact us.
Unique - Rare Chromosome Disorder Support Group - www.RareChromo.org
http://www.rarechromo.org   (112 words)

  
 Chromosome 9 Resource
Chromosome 9 is approximately 145 Megabases in length and chiasma counts suggest a genetic length of 116 cM in males.
The Sanger centre announced in 1998 that they have designated chromosome 9 as one of their sequencing targets.
This resource enables the collaboration of investigators and dissemination of information relevant to chromosome 9.
http://www.gene.ucl.ac.uk/chr9   (135 words)

  
 Cell & Chromosome Home page
Cell & Chromosome is ready to receive papers on all aspects of cell division, including interphase cell cycle activities, chromosome structure, segregation, malsegregation and manipulation.
Chromosome loops arising from intrachromosomal tethering of telomeres occur at high frequency in G1 (non-cycling) mitotic cells: Implications for telomere capture
DNA and the chromosome – varied targets for chemotherapy
http://www.cellandchromosome.com/home   (191 words)

  
 Arabidopsis thaliana BAC Sequencing at TIGR
A graphical view of sequencing contigs on chromosome II I THINK WE NEED TO REMOVE THIS FOR THE MOMENT UNLESS WE CAN KEEP IT UP TO DATE FOR EACH CHROMOSOME.
TIGR is part of the Arabidopsis Genome Initiative (AGI) to produce genomic sequence from Arabidopsis.
We were initially assigned chromosome II in a collaboration with Howard Goodman's group at MGH in Boston.
http://www.tigr.org/tdb/at/atgenome/atgenome.html   (245 words)

  
 Y-Chromosome STRs
YHRD-Y Chromosome Haplotype Reference Database (38,761 haplotypes with 9 loci): http://www.yhrd.org/index.html
AAFS 2002 Y Chromosome Workshop presentation (February 12, 2002; Atlanta, GA)
AAFS 2004 Y Chromosome Workshop (February 17, 2004; Dallas, TX)
http://www.cstl.nist.gov/biotech/strbase/y_strs.htm   (304 words)

  
 Chromosome
Look up a description of Chromosome in the NHGRI Talking Glossary
http://www.accessexcellence.org/AB/GG/chromosome.html   (31 words)

  
 Y Chromosome DNA Data on Jefferson and Hemings
This document maintained by Robert J. Huskey Last updated on February 25, 2003.
Y Chromosome DNA Data on Jefferson and Hemings
http://www.people.virginia.edu/~rjh9u/jeffhemm.html   (476 words)

  
 Y-Chromosome Nomenclature System
For a list of updates to this article, please visit the Progress Report section
Running Head: Y chromosome haplogroup tree and nomenclature
http://ycc.biosci.arizona.edu/nomenclature_system/frontpage.html   (86 words)

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