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| | BBC News HEALTH Frequent sex 'not linked to strokes' |
 | | Middle aged men can have sex as many times as they like without increasing their risk of having a stroke, according to research. | | | Eoin Redahan, a director of The Stroke Association, said the link between sex and strokes could be largely coincidental. | | | The risk of strokes was highest among those men who would not say how often they had sex. |
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http://news.bbc.co.uk/hi/english/health/newsid_1763000/1763627.stm
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| | NICOLE VALENZUELA |
| | I am interested in theoretical and empirical aspects of the evolution and ecology of sex determining mechanisms and related topics, such as the evolution of sex ratio, sex chromosomes, and sex-linked traits. | | | This component, which addresses basic questions in evolutionary ecology, provides a critical view to the ecological context in which sex determining mechanisms evolve, and is also the basis of the conservation component of my research. | | | I am interested in identifying how many distinct systems of sexual polyphenisms exist in nature, how do they work, and why did they come into being. |
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http://www.public.iastate.edu/~nvalenzu/research.html
(615 words)
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| | DISEASES- SEX LINKED AND SEX INFLUENCED. Essay Sample. Free term papers for college students |
| | Sex linked and sex influenced diseases are a problem that hurts our society. | | | Sex linked diseases are born when sex genes, that compose two of the 46 chromosomes, are mutated by an error in copying genes in reproduction. | | | Another sex linked diseases that is similar to DMD in makeup, not in symptoms is hemophilia. |
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http://www.essaysample.com/essay/000981.html
(2759 words)
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| | Underage sex linked to single-parent families |
| | The study, based on responses from more than 2,250 youngsters aged between 13 and 15, makes direct links between teenagers' home environments and attitudes towards sex. | | | Boys who do not have meaningful contact with men "are likely to find difficulty in forming stable relationships with members of the opposite sex. | | | More than seven in 10 who had not had sex came from a family where parents were married to each other, compared with only half of the teenagers who were sexually active. |
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http://www.islamfortoday.com/underage.htm
(646 words)
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| | Fragile X Syndrome - X-linked Mental Retardation and Macroorchidism |
| | They and their family members are at increased risk to have children with fragile X syndrome and should be offered DNA-based testing and recurrence risk counseling based on the results. | | | 15% to 20% of those with Fragile X Syndrome exhibit autistic-type behaviors, such as poor eye contact, hand-flapping or odd gesture movements, hand-biting, and poor sensory skills. | | | Fragile X syndrome (FXS) is the leading cause of inherited mental retardation, affecting approximately 50,000 persons in the United States... |
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http://www.ibis-birthdefects.org/start/frafact.htm
(661 words)
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| | Human Genetics |
| | A thin needle is inserted into the amniotic fluid surrounding the fetus (a term applied to an unborn baby after the first trimester). | | | The first Mendelian trait in humans was described in 1905 (brachydactly) by Dr. Farabee (no relation to your author). | | | The new technique allows differentiation between the healthy and diseased male fetus, so parents have more information with which to make an informed choice (if they chose). |
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http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookhumgen.html
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| | How to 3 |
| | A gene on the X chromosome is X linked; one on the Y chromosome is Y linked. | | | Because males only receive one X chromosome, the pattern of inheritance of X linked genes is different from that of autosomal genes. | | | Another oddity about the inheritance of X linked traits is that baby boys always inherit their X linked traits from their mothers. |
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http://www.cod.edu/people/faculty/fancher/GenProb3.htm
(1177 words)
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| | Teen Sex Linked To Early Friendships |
| | The researchers also found that sexually inexperienced 15 and 16-year-olds were much more likely to have had same-sex and same-grade friends as preteens than were sexually experienced 15 and 16-year-olds. | | | The nature of preteen friendships can play a key role in determining whether or not a child will engage in sexual activity early in adolescence, a new study suggests. | | | Our results suggest that a significant minority of youth are having sex outside of a relationship." |
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http://www.altpenis.com/penis_news/20021020212422data_trunc_sys.shtml
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| | Ichthyosis info |
| | The inheritance of a trait by the presence of a single gene on the X chromosome in a male, passed from a female who has the gene on one of her X chromosomes, and who is referred to as an unaffected carrier. | | | The inheritance of a trait by the presence of a single gene on the X chromosome in a male or female, passed from an affected female who has the gene on one of her X chromosomes. | | | An individual with ichthyosis has a 50/50 chance to pass the condition to his or her child. |
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http://www.vzw-sophie.be/ichthyosis_info.htm
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| | Same-Sex Orientation Linked to Teen Suicide Risk |
| | As for suicidal thoughts, girls with same-sex orientation were more than twice as likely as other girls to consider taking their own lives, while for boys same-sex orientation was linked to a 68% greater likelihood. | | | This study broadens the scope of past research by looking at a national sample of high school students and at teens who report same-sex feelings--not just those who identify themselves as homosexual, according to Dr. Stephen T. Russell of the University of California, Davis, and colleague Dr. Kara Joyner. | | | But while this pattern is disturbing, Russell and Joyner also note that they agree with critics' concerns that there has been too much research focused on the potential negative psychological effects of homosexuality. |
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http://www.totalobscurity.com/mind/news/2001/gay-suicide.html
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| | Botany online: Classic Genetics - The Chromosome Theory - Sex Chromosomes - Sex-linked Inheritance |
| | The Y-chromosome has in fact such a great influence on the expression of the male sex that it seems as if the autosomes and the X-chromosomes were of no importance at all. | | | The condition in Drosophila and Melandrium should not lead to the conclusion that plants and animals differ completely in the way their sexes are determined. | | | The X- and the Y-chromosome are therefore not only responsible for the determination of the sexes but harbour also genes that exert their influence on features that are independent of the sex. |
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http://www.biologie.uni-hamburg.de/b-online/e11/11a.htm
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| | Genetics Tutorial |
| | Furthermore, if one needs two changed genes (one from the mother and one from the father) to express a condition, the condition is said to be inherited in a recessive manner. | | | If one needs only one changed gene to express a condition, the condition is said to be inherited in a dominant manner. | | | A male who has a changed gene on his one (and only) X chromosome will manifest the condition; a female with one changed gene will be a carrier. |
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http://www.hopkinsmedicine.org/greenbergcenter/tutorial.htm
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| | eMedicine - Ichthyosis : Article by Kenneth Goins, MD |
| | Similarly, in another large epidemiological study, incidence of X-linked recessive ichthyosis was 1 in 6190 males. | | | However, the use of calcipotriene in treating congenital hyperproliferative disorders is limited by the theoretical risk of hypercalcemia from absorption of the drug from the skin. | | | Medicine is a constantly changing science and not all therapies are clearly established. |
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http://www.emedicine.com/oph/topic687.htm
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| | wgetz?-e+[omim-id:308100] |
| | (1997) used X-linked ichthyosis to develop a model of corrective gene therapy to human skin in vivo. | | | (1995) concluded that there may be a form of X-linked ichthyosis due to some mechanism other than STS deficiency. | | | In a patient with X-linked ichthyosis, Alperin and Shapiro (1997) identified an A-to-G transition at nucleotide 1552 of the STS gene, causing a predicted switch of a histidine to an arginine at residue 444. |
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http://srs.embl-heidelberg.de:8000/srs5bin/cgi-bin/wgetz?-e+[omim-id:308100]
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| | Sex Determination |
| | It seems likely that the sex determination pathway will be related to that of Drosophila melanogaster subsequent to the action of the sexlethal gene, which does not appear to be involved in sex determination in other groups of Diptera (Martin & Lee 1999). | | | 'jacksoni' has lead to the creation of a new sex chromosome - but not a change in MD site. | | | The MD is near the centromere of the CD chromosome, but a whole arm translocation has converted the arm combination from BF, CD to BD and CF, CD still carries the MD locus, so the translocation effectively creates an X |
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http://www.genetics.unimelb.edu.au/Martin2/sexdt.html
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| | NDI Article: 71 |
| | In the present study, this half-normal response occurs in both mother and daughter, whereas the son has no factor VIIII response to desmopressin, as is typical of males with X-linked recessive NDI (23). | | | The results provide insight into the possible mechanism by which the mother in this family with X-linked recessive NDI may have developed marked vasopressin-resistant hypotonic polyuria. | | | Almost all cases of congenital nephrogenic diabetes insipidus (NDI) are transmitted in an X-linked recessive manner by an asymptomatic carrier female to her affected son. |
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http://www.ndif.org/Article/jar-71.html
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| | Sex Chromosomes |
| | Bioinformatic Analysis of HERV-H Families on Human Sex Chromosomes... | | | Discovery Channel :: News :: Study: Platypus Retains Bird Sex Link... | | | Preferential location of sex chromosomes, their aneuploidy in human sperm, and t... |
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http://www.scienceoxygen.com/biology/145.html
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| | Ichthyosis, X Linked |
| | X-Linked Ichthyosis is a hereditary disorder transmitted by X-linked genes. | | | X-Linked Ichthyosis can be diagnosed before birth by taking a few cells from the fluid in the water sac that surrounds the fetus and testing these for abnormalities. | | | Women who are carriers of an X-linked disorder have a 50 percent risk of transmitting the carrier condition to their daughters, and a 50 percent risk of transmitting the disease to their sons. |
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http://hw.healthdialog.com/kbase/nord/nord545.htm
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| | Gene Linked To Sex Reversal Disorder |
| | The research team, led by Dr. Amanda Swain of the MRC National Institute for Medical Research in London, UK, suggests that Dax1 plays a role very early in mammalian sex determination. | | | "Mammalian sex determination is therefore part of a rapidly evolving system with Dax1 and Sry at the top of the hierarchy." | | | In individuals who carry XY sex chromosomes -- denoting male gender -- and a duplication of a small part of the X-chromosome, the extra Dax1 may override the action of Sry. |
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http://www.personalmd.com/news/a1998021911.shtml
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| | Migraine Headaches, Sex Hormones Linked |
| | Thinking that sex hormones might play a role, Tamara Pringsheim, MD, of the University of Toronto teamed with Dutch colleagues at Amsterdam's Gender Team Clinic to study the idea. | | | Finding From Dutch Study of Male-to-Female Sex Change Patients | | | Fifty male-to-female sex-change patients being treated at the clinic took part in the study. |
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http://my.webmd.com/content/article/92/101963.htm
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| | Gouldian head color genetics |
| | However, the term double-factor (DF) for this sort of sex linked inheritance seems to be the more accurate, and clearer terminology, and is what will be used here. | | | This could also be applied to sex linked inheritance in males, but for clarity, this situation will be termed single-factor (SF). | | | Because the genes for red head color are sex-linked and one of these genes is required for the expression of yellow head coloration, a clear understanding of sex linkage is necessary to understand the inheritance of both red and yellow head traits. |
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http://www.birds2grow.com/art-gouldheadcolor.html
(1720 words)
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| | Rare Pediatric Disease Database |
| | X-linked ichthyosis (XLI) is an inherited skin condition characterized by dry, thick, FISH -like scaling of the skin. | | | Boys inherit a gene with a change ( mutation) on the X chromosome from their mother, who typically does not have symptoms. | | | There are several different types of ichthyosis and XLI is the mildest of all ichthyosis conditions. |
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http://www.madisonsfoundation.org/content/3/1/display.asp?did=543
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| | Ichthyosis/Ichthyosis Vulgaris |
| | Ichthyosis and ichthyosis vulgaris are treated with lotions or ointments to soften the skin and soothe the itching. | | | Ichthyosis most commonly affects the skin around the face, ears, scalp, neck, back, and the front of the arms and legs. | | | Ichthyosis vulgaris is a lifelong problem, but has no serious complications when treated properly. |
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http://www.hmc.psu.edu/healthinfo/i/ichthyosis.htm
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| | Ichthyosis Information |
| | This works a little bit like a very small-scale Yahoo: We become aware of sites or individual web pages that have good information about ichthyosis and add them to our index. | | | Ichthyosis causes the skin to build up and scale, causing it to be extremely dry, amongst other problems. | | | However, the information on this site is primarily practical information being shared by people who have ichthyosis themselves--it's not information from medically trained or qualified professionals. |
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http://www.ichthyosis.com
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| | SIDEROBLASTIC ANEMIAS |
| | Antibody-mediated acquired sideroblastic anemia responsive to cytotoxic therapy. | | | The investigators hypothesized that an autosomal gene regulates ALAS-2 gene expression. | | | About 15% of patients with myelodysplasia develop acute leukemia. |
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http://sickle.bwh.harvard.edu/sideroblastic.html
(2167 words)
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| | Ichthyosis. DermNet NZ |
| | People with ichthyosis need to bathe, moisturise and exfoliate their skin on a daily regular basis. | | | Your dermatologist may prescribe or recommend moisturising creams and ointments to keep the condition under control. | | | Limited movement: dry, scaly skin may make it too painful to move some parts of the body |
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http://www.dermnetnz.org/scaly/ichthyosis.html
(2167 words)
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