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Topic: Sex chromosome


  
 Sex - Wikipedia, the free encyclopedia
Discordances between the biological and psychosocial levels, such as when the gender identity does not match the anatomic sex, or between the various psychosocial levels, such as when the gender role does not match the gender identity, are even more common but less well understood.
It shows the man with broader shoulders (sex dimorphism) and the woman in clothing that is in the western world rarely worn by men, a dress (which functions as a gender signal).
In contrast to the small percentage of people with biological discordances of sex, a fairly large proportion of human beings may be "discordant" in one or more behavioral or psychological dimensions.
http://en.wikipedia.org/wiki/Sex   (1945 words)

  
 KS&A - Sex Chromosome Variations - Biography of Klinefelter Syndrome
Chromosomes, the spaghetti-like strands of hereditary material found in each cell of the body, determine such characteristics as the color of our eyes and hair, our height, and whether we are male or female.
Parents should stress that neither the X chromosome nor the infertility associated with it mean that he is in any way less masculine than other males his age.
At this time, the child can be reassured that he does not have a disease and will not become sick.
http://www.genetic.org/ks/scvs/KS_NIH.htm   (6096 words)

  
 Sex Chromosome Abnormalities Found Among
There is no doubt that such information, counseling, and assistance also ought to be given to all parents who have a child with risk of learning or behavior problems due to causes other than sex chromosome abnormalities.
At the time of admission for birth, prospective mothers are now offered the opportunity to have a chromosome analysis from a sample of umbilical cord blood taken immediately after the birth of the child.
The six boys with behavior problems all grew up in homes with family disintegration or poor social conditions or in homes where one or both parents had mental problems as previously described.
http://www.aaa.dk/TURNER/ENGELSK/incidence.htm   (4044 words)

  
 Whither the Y?
Once a particular chromosome (the Y for example) was associated with one sex, however, things would have started to change.
As he pointed out, the same principle should apply to any chromosome which cannot undergo recombination.
Bill Rice, however, decided that there was indeed a way to make such a test.
http://biomed.brown.edu/Faculty/M/Miller/Discover/Y.html   (2498 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.
Such conditions often affect sex determination (whether a person has the sexual characteristics of a male or a female), sexual development, and the ability to have children (fertility).
http://en.wikipedia.org/wiki/Y_chromosome   (1820 words)

  
 Yellow.jpg
Remember, there are many other chromosomes in the pigeons makeup, chromosomes that determine eye color, pattern, spread, grizzle, indigo, etc. but these genes are not located on the sex chromosome so they do not play a role in determining the sex of a pigeon.
In the process of mating, the cock pigeon contributes one of his two chromosomes and the hen may or may not contribute hers.
Any of these genes can determine the sex of the pigeon and are referred to as sex linked genes.
http://www.angelfire.com/sc3/sckc/genetics2.html   (1564 words)

  
 Human Y Chromosome, Sex Determination, and Spermatogenesis--A Feminist View -- Marshall Graves 63 (3): 667 -- Biology ...
the Y chromosome and expressed only in the genital ridge.
The reason for the traditional view of the human Y chromosome
Most of them cluster on the short arm of
http://www.biolreprod.org/cgi/content/full/63/3/667/b   (6931 words)

  
 Dioecious Plants. A Key to the Early Events of Sex Chromosome Evolution -- Negrutiu et al. 127 (4): 1418 -- PLANT ...
chromosome, which essentially behaves like a single recombination
that changes in sex expression generate either hermaphrodite or
The outcome is the accumulation on the sex
http://www.plantphysiol.org/cgi/content/full/127/4/1418   (4055 words)

  
 Prenatal diagnoses of sex chromosome conditions -- Biesecker 322 (7284): 441 -- BMJ
Health behavior and health education: theory, research and practice.
Matloff E. Practice variability in prenatal genetic counseling J Genet Counsel 1994; 3: 215-231
Prenatal diagnoses of sex chromosome conditions -- Biesecker 322 (7284): 441 -- BMJ
http://bmj.bmjjournals.com/cgi/content/full/322/7284/441   (1060 words)

  
 Untitled Document
Chromosomes come in pairs and we inherit one of each pair from our mother and the other from our father.
Most of these individuals will never know that they have a sex chromosome abnormality because there is usually nothing out of the ordinary about their behavior, appearance, or mental development.
One of those pairs is the sex chromosomes, and they are called that because they determine the sex of the individual.
http://www.dor.kaiser.org/genetics/OurServices/XXY-XYY-XXXMain.html   (1384 words)

  
 Introduction: Sex chromosome conditions - WrongDiagnosis.com
- Prevalence and Incidence of Sex chromosome conditions
Anamolies in the sex chromosomes cause various conditions.
Conditions list: The list of conditions in the Sex chromosome conditions group includes:
http://www.wrongdiagnosis.com/s/sex_chromosome_conditions/intro.htm   (235 words)

  
 Human Chromosomal Abnormalities:  Sex Chromosome Abnormalities
They are usually capable of normal sexual function, including erection and ejaculation, but many, if not most, are unable to produce sufficient amounts of sperm for conception.
Klinefelter syndrome males with more than two X chromosomes usually have extreme symptoms and are often mentally retarded.
There is no evidence that Klinefelter syndrome boys and men are more inclined to be homosexual, but they are more likely to be less interested in sex.
http://anthro.palomar.edu/abnormal/abnormal_5.htm   (1047 words)

  
 Chromosome 20 Abnormalities - diseasesandisorders - Chromosome 20 Abnormalities
Information on testosterone replacement therapy, sex chromosome variations,
KSandA - Sex Chromosome Variations - Testosterone Replacement Therapy
Information about gene mutations and chromosomal abnormalities in this condition.
http://diseases-disorders.the-health.com/chromosome20abnormalities   (961 words)

  
 [No title]
suggested could be associated with sex determination (Russell, Rothwell) iii.
influences both primary and secondary sex characters 37 º±± Nov06f - ABERRATIONS ±±º A. GENIC BALANCE IN Drosophila a.
Mendel suggested in a letter to Naegli that sex determination might follow the same segregational pathways as other inherited characteristics (Strickberger) d.
http://www.pitt.edu/~cft1/98FSEXLN.TXT   (2114 words)

  
 Stanford Psychiatry Neuroimaging Laboratory: Sex Chromosome Abnormalities
Past studies in our laboratory have mainly focused on individuals with 45X, 47XXY, and 47XXX chromosomal profiles.
Sex chromosome abnormalities (SCA) describe those conditions in which there is some variation among the normal euploidic sex chromosomes in male or female individuals.
Subtle language, neuromotor, and learning difficulties have been identified in most forms of SCA, however.
http://spnl.stanford.edu/disorders/sca.htm   (191 words)

  
 X-chromosome Dosage Compensation
Rather it must mean that, as regards most features and characters,
Those who have since seized the high-ground of modern dosage-compensation research seem exclusively concerned with "
Included in this study are the loci of yellow, achaete, facet, singed, garnet, and forked.
http://post.queensu.ca/~forsdyke/xchromos.htm   (12811 words)

  
  DukeMedNews Sex Determining Genes of Infectious Fungus Resemble Human Y Chromosome
"While mechanisms of sex determination are extremely diverse, our study highlights remarkable similarities among them in widely divergent groups."
The fungus might therefore serve as a useful model system for the study of sex chromosome evolution and the genetic changes that can lead to infertility, he said.
Their findings might also yield insight into the mechanism whereby C. neoformans invades the central nervous system to cause disease, most commonly in patients who lack a functioning immune system, such as organ transplant recipients and those with HIV/AIDS, Heitman added.
http://www.dukemednews.org/news/article.php?id=8277   (852 words)

  
 Chromosomal Conditions
A genetic counselor or clinical geneticist can help interpret and clarify information
"Clinical manifestations of sex chromosome anomalies." Comprehensive Therapy, 16:3-10, 1990.
Chromosomal Problems Discovered through Prenatal Diagnosis: XYY Syndrome
http://www.kumc.edu/gec/support/chromoso.html   (921 words)

  
 Sex-determination system - Wikipedia, the free encyclopedia
The WZ sex-determination system is found in birds and some insects and other organisms.
Most common sex-determination systems in animals involve a genetic mechanism based on the chromosomes of that organism.
However, other systems can involve other variables such as temperature.
http://en.wikipedia.org/wiki/Sex_chromosome   (404 words)

  
 X-trisomy --  Encyclopædia Britannica
Discusses the behavioral, medical, and the educational aspects of this chromosomal disorder that causes intellectual disabilities and developmental delays.
sex chromosome disorder of human females, in which three X chromosomes are present, rather than the normal pair.
About 1 in 400 male and 1 in 650 female live births demonstrate some form of sex chromosome abnormality, although the symptoms of these conditions are generally much less severe than are those associated with autosomal abnormalities.
http://www.britannica.com/eb/article-9077662   (711 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.
In humans, whether a person is male or female is determined by the particular combination of the two sex chromosomes in the body cells.
http://encyclopedia.farlex.com/Y+chromosome   (370 words)

  
 New Scientist Breaking News - Platypus sex is XXXXX-rated
A similar process might have led to the ten-chromosome system in the platypus, though researchers admit to being stumped.
But although many people believe that DMRT1 will turn out to be the key sex-determining gene in birds, Grützner cautions that there is no evidence that it plays a similar role in the platypus.
In other words, rather than a single chromosome pair, platypuses have a set of ten-chromosomes that determine their sex.
http://www.newscientist.com/article.ns?id=dn6568   (543 words)

  
 New Scientist Breaking News - Sex chromosome clue to autism
Skuse suggests it is these "dosage-sensitive" genes that are responsible for the sex differences in autism.
The X chromosome carries many genes that are vital for a wide range of physiological functions.
However, confirmation of this explanation of autism's sex bias is still far off - researchers have not yet determined which specific gene or genes are responsible and have not looked at the function of these genes in autistic people.
http://www.newscientist.com/article.ns?id=dn4145   (519 words)

  
 A Chromosome Study
11.Ý What sex will the unborn child be?Ý _____
You will then compare and diagnose the abnormality present in the patient of the second karyotype.
2.Ý How many chromosomes are present in each cell of this human?ÝÝ _____________
http://www.biologycorner.com/worksheets/Chromosomestudy.htm   (549 words)

  
 sex chromosome
chromosomes that are associated with the determination of gender, in mammals constituting an unequal pair, the X and the Y chromosome.
http://crisp.cit.nih.gov/Thesaurus/00007385.htm   (21 words)

  
 Biological Basis of Heredity: Sex Linked Genes
chromosome is often masked in their phenotype by a dominant normal allele on the other.
This information is also summarized in a January 2005 Nature news report
It was also noted that their research group had identified 78 Y chromosome genes, including ones that were previously unknown.
http://anthro.palomar.edu/biobasis/bio_3b.htm   (515 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 chromosome definition - Medical Dictionary definitions of popular medical terms
The sex chromosomes evolved from an ancient pair of autosomal chromosomes.
The sex chromosomes, by convention, are the 23rd and last pair of chromosomes in a normal human karyotype.
Sex chromosome definition - Medical Dictionary definitions of popular medical terms
http://www.medterms.com/script/main/art.asp?articlekey=20692   (245 words)

  
 A primitive sex chromosome
One system, seen in many animals and a few plants, involves morphologically distinct chromosomes that differ in one sex but are the same in the other.
Plant sex chromosomes have evolved more recently and are less distinct than those of animals.
Various sex determination systems have evolved independently in the plant and animal kingdoms.
http://www.nature.com/nature/links/040122/040122-7.html   (128 words)

  
 Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
The translocation on the long arm is associated with a mottled leaf character which is depressed by the presence of the translocation on the short arm.
Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link.
This chromosome is normally heterobrachial with one arm twice as long as the other.
http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=4749044   (223 words)

  
 HHMI News: Protein May Play Role in Sex Chromosome Inactivation
While the researchers have not yet determined the precise nature of CTCF’s interaction with Tsix, their experiments hint that it serves as an activator of the gene.
The decision to inactivate one of the two X chromosomes, which occurs early in development, is a life-or-death decision that is made in the female eggs of all mammals, including humans.
A philanthropy serving society through biomedical research and science education.
http://www.hhmi.org/news/lee.html   (781 words)

  
 sex chromosome - definition of sex chromosome by the Free Online Dictionary, Thesaurus and Encyclopedia.
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.
Either of a pair of chromosomes, usually designated X or Y, in the germ cells of most animals and some plants, that combine to determine the sex and sex-linked characteristics of an individual, with XX resulting in a female and XY in a male in mammals.
sex chromosome - (genetics) a chromosome that determines the sex of an individual; "mammals normally have two sex chromosomes"
http://www.thefreedictionary.com/sex+chromosome   (277 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)

  
 Sex Linkage
In many organisms, sex of the individual is determined genetically by the presence or absence of particular sex-chromosomes.
This system is the simplest, but it does not designate which is dominant - in this system, wild-type is usually assumed to be dominant, if not otherwise stated.
a gene carried on the sex chromosome that is present in both sexes; one copy in one sex, two in the other.
http://web.mit.edu/esgbio/www/mg/sexlinkage.html   (667 words)

  
 sex chromosome
a chromosome, differing in shape or function from other chromosomes, that determines the sex of an individual.
http://www.infoplease.com/dictionary/sex+chromosome   (34 words)

  
 Amazon.ca: Books: Prospective Studies on Children with Sex Chromosome Aneuploidy
Look for books like Prospective Studies on Children with Sex Chromosome Aneuploidy by subject:
Prospective Studies on Children with Sex Chromosome Aneuploidy
Use Your Account to view or change your orders
http://www.amazon.ca/exec/obidos/ASIN/0471625094   (121 words)

  
 genome.gov Talking Glossary: "sex chromosome"
One of the two chromosomes that specify an organism's genetic sex.
Humans have two kinds of sex chromosomes, one called X and the other Y. Normal females possess two X chromosomes and normal males one X and one Y. explained:
http://www.genome.gov/glossary.cfm?key=sex+chromosome   (56 words)

  
 sex chromosome
[n] a chromosome that determines the sex of an individual; "mammals normally have two sex chromosomes".
http://lookwayup.com/lwu.exe/lwu/i?t=xx&h=imode&s=h&b=&w=sex_chromosome&pos=n&Syn_ID=4222294&st=synrel   (24 words)

  
 Deron Bauman
True enough, some men who have sex with Real Dolls are creepy, the kind of guys you wouldn't want to be alone with.
The squid evolved these massive members because female giant squid are about 1/3 bigger than the males, and they don't much like being inseminated, so they tend to fight back.
This is all the trickier because mating takes place during enormous, multisquid orgies.
http://www.deronbauman.com   (15975 words)

  
 PharmGKB: Sex Chromosome Aberrations
This work is supported by the NIH/NIGMS Pharmacogenetics Research Network and Database (U01GM61374).
Aberration, Sex Chromosome; Aberrations, Sex Chromosome; Abnormalities, Sex Chromosome; Abnormality, Sex Chromosome; Chromosome Aberration, Sex; Chromosome Aberrations, Sex; Chromosome Abnormalities, Sex; Chromosome Abnormality, Sex; Sex Chromosome Aberration; Sex Chromosome Abnormalities; Sex Chromosome Abnormality
http://www.pharmgkb.org/do/serve?objId=PA445637&objCls=Disease   (65 words)

  
 MedlinePlus: Klinefelter's Syndrome
Sex Chromosome Variations: About 47XXY (Klinefelter Syndrome and Associates)
Chromosomal Abnormalities (March of Dimes Birth Defects Foundation)
Patient's Guide to Low Testosterone (Endocrine Society, Hormone Foundation)
http://www.nlm.nih.gov/medlineplus/klinefelterssyndrome.html   (136 words)

  
 Sex Chromosome
Look up descriptions of Sex Chromosomes, in the NHGRI Talking Glossary
http://www.accessexcellence.org/RC/VL/GG/sex_chromosomes.html   (31 words)

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