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Witness SU was about nine metres away from NyiramasuhuNo. Immediately following NyiramasuhuNo's instruction, after the vehicle had left, one of the. examination of their sex chromosomes was initiated by the International Olympic Games, and went on to win a silver medal in the women's metres. Sex. Modern Architecture and the Sexual Revolution Richard J. Williams pods of no more than 20 square metres that could be combined according to needs.

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Sex verification in sports also known as gender verificationor loosely as gender determination or a sex test occurs because eligibility of athletes to compete is restricted in theory whenever sporting events are limited to a single sexwhich is generally the case, as well as when events are limited to mixed-sex teams of defined composition e. Practice has varied tremendously over time, across borders and by competitive level. Issues have arisen multiple times in the Olympic games and other high-profile sporting competitions, for example allegations that certain male athletes attempted to compete as women or that certain female athletes had intersex conditions that gave unfair advantage.

The first mandatory sex test issued sex the International Association of Athletics Federations IAAFthe world's track and field governing body, for woman athletes was in July in the month before the European Championships in Belgium. All athletes were tested in their own countries. At the Olympics, testing was introduced in The purpose behind sex verification —identifying athletes whose hormone levels are abnormal compared to others of their purported sex—causes sex identity crises, elicits demeaning reactions sex and privatelyoften suddenly isolates athletes socially, and leads to depression and sometimes suicide.

Initially, sex verification took the form of physical examinations. It subsequently evolved into chromosome testing, later testosterone level testing. It is not always simply checking whether a person's sex chromosome pair [6] is XX vs. XY, or comparing their levels of key sex hormones metres distinct reference ranges, to determine an athlete's sex. Variations in pairings of inherited chromosome, other genetic aspects, and pre- and postnatal physical sex at subcellular to organ levels mean some people are not unambiguously female or male.

Fetuses start out as undifferentiated, then the SRY gene which is most often—but not always—located on the Y chromosome turns on a variety of hormones that differentiate by the time of birth the newborn as metres male baby. But sometimes this differentiation does not occur while other times the SRY gene is located on a different chromosome: People with two X chromosomes can develop hormonally or phenotypically as a male; and people with an X and a Y can develop hormonally or phenotypically as a female.

Males can have low levels of testosterone and are still males just because of the low levels does not make them any less male. Females can have high levels of testosterone and still be female not making any difference to their identified sex.

United States Olympic Committee sex Avery Brundage requested, during or shortly after the Summer Olympics in Berlinthat a system be established to examine female athletes. The International Olympic Committee followed suit in Chromosome testing was introduced by the International Olympic Committee during the Summer Olympics. This method of testing was later abolished, as metres was shown to be inconclusive in identifying maleness. The International Sex of Athletics Federations ceased sex screening for all athletes in[13] but retained the option metres assessing the sex of a participant should suspicions arise.

The International Olympic Committee 's board voted to discontinue the practice in June In AugustSouth African athlete Caster Semenya was subjected to mandatory sex verification testing.

It includes the statement, "Nothing in these Regulations is intended to make any determination of sex. Instead, these Regulations are designed to identify circumstances in which a particular athlete will not be eligible by reason of hormonal characteristics to participate in Olympic Games OG Competitions in the female category.

In the event that the athlete has been declared ineligible to compete in the female category, the athlete may be eligible to compete as a male athlete, if the athlete qualifies sex the male event of the sport. As with previous forms of sex testing, testosterone testing has been regarded [ by whom? For example, elite athletes have greater aerobic capacity and endurance in comparison to the general population.

Policies on hyperandrogenism were metres following the case of Metres Chand v. In doing so the court immediately suspended the practice of hyperandrogenism regulation used by the IAAF and declared it void unless the organization could present better metres by July In Novemberthe IOC held a meeting to address both its hyperandrogenism and transgender policies. It also repeated an earlier policy statement that, to "avoid discrimination, if not eligible for female competition the athlete should be eligible to compete in male competition".

This new regulation replaced all previous rules implemented regarding women with Hyperandrogenism. Sporting organizations must implement policies in accordance with human rights norms and refrain from introducing policies that force, coerce or otherwise pressure women athletes into undergoing unnecessary, irreversible and harmful medical procedures in order to participate as women in competitive sport. States should also adopt legislation incorporating international human rights standards to protect the rights of intersex metres at all levels of sport, sex that they frequently report bullying and discriminatory behaviour, and should take steps to protect the health rights of intersex women in their jurisdiction from interference by third parties.

One of the fundamental recommendations published almost 25 years ago With the passage of time and the recurring public spectacle of young women Sex verification is not conducted on athletes competing in the male category, metres little data are available on their chromosomes or hormone profiles.

However, a post-competition study of elite athletes by Healy et al. The authors found that:. Using these data, Scientific American estimated that "almost 2 percent" of male competitors had testosterone levels in the typical sex range. Sisters Tamara and Irina Press. In Novemberthe IOC held a meeting to address both its transgender and hyperandrogenism policies. In regard to transgender athletes it stated that transgender athletes sex be excluded from an opportunity to participate in sporting competition.

Transgender athletes who identified themselves as female would be allowed to compete in that category as long as their testosterone levels were below 10 nanomoles per litre for at least 12 months prior to the competition.

There would be no restrictions on transgender athletes who identify and compete as male. Many women weren't openly competing as transgender during this time but they tended to keep a low profile to cause such controversy or be seen as a threat. The start of the 21st century showed a great amount of transgender athletes now competing at all levels which include Highschool, college, metres even professional sports.

Non-white female athletes are disproportionately targeted for sex verification testing because they are judged against a white standard, so clear discrepancies will often be found. The testing is especially difficult for people who could be considered intersex.

Genetic differences can allow a person to have a male genetic make-up and female anatomy or body chemistry. Gender verification tests are difficult, expensive, and potentially inaccurate.

Furthermore, these tests fail to exclude all potential impostors eg, some 46,XX malesare sex against women with disorders of sexual development, and have had shattering consequences for athletes who 'fail' a test Gender verification has long been criticized by geneticistsendocrinologistsand others in the medical community. One major problem was unfairly excluding women who had a birth defect involving gonads and external genitalia i. A second problem is that only women, not men, were ever subjected to gender verification testing.

Systematic follow-up was rare for athletes "failing" the test, often performed under very public circumstances. Follow-up was crucial because the subjects were not male impostors, but intersexed individuals.

Women with higher levels of androgen particularly testosterone are often considered to have a competitive advantage over other women since women statistically have lower levels than men. This difference in androgen levels is the reason many sports requiring athletes compete only among their own sex. In January in Miami, instead of succeeding in improving the policies specifying whether an athlete should participate as a woman or a male, medical professionals experienced ambiguity in regards to these policies.

Alice Dreger states it is risky to publicly reveal that an athlete is no longer allowed to compete as a woman without first informing the athlete. For example, Caster Semenya found out through public media that the tests she had taken were meant to determine whether she is female or male.

Another athlete, Santhi Soundarjan, tried metres commit suicide subsequent to failing the test for determining her gender and being stripped of her Asian Games medal. A scholar questions whether men with androgen levels similar to those of women will sex permitted to participate in the women's category or instead be granted the opportunity to increase their androgen levels to those of other males. This is the logical and fair result how policies using functional testosterone to decide eligibility sex compete as a female or a male work for women.

By contradicting her sex they were violating metres by international and national genetic privacy laws and also another factor was one's right to not know called human genetics. Gender verification hurts many different factors including: unfair disqualification in sporting events, identity crisis and confusion, social hiding, depression, and suicide. Transgender athletes who wish to compete in the female category are allowed to do so if their testosterone levels are in accordance with the required levels.

However, others opposed the participation of transgender athletes on women's teams state that the argument is unsound. Cite error: A list-defined reference has a conflicting group attribute "note" see the help page. From Wikipedia, the free encyclopedia. Intersex topics. Human rights and legal issues. Compulsory sterilization Discrimination Human rights reports Legal recognition Malta declaration Medical interventions Sex assignment Sex characteristics legal term Yogyakarta Principles.

Medicine and biology. Society and culture. History and events. Rights by country. See also. Mark Weston. Foekje Dillema. Erik Schinegger in Main article: Transgender people in sports. Archived from the original on 22 April Retrieved 28 May April The Lancet.

Sport, Science, and Equity". Archives of Sexual Behavior. The International Journal of the History of Sport. New York Times. Archived from the original on 4 September Archived from the original on 4 June November Sports Medicine.

Medscape Women's Health. BBC Sport. Retrieved 19 August

A shark jumps out of the water grabbing a man and taking him under we do not see the man again. A large shark chases teen girls trying to escape a cave and it snaps at them as they swim through a narrow passage that it cannot fit through. An underwater, motorized device moves around an open area and bounces off walls with no one nearby; a large shark swims across the screen and chomps on it as four teens watch and hide by lying still against the rocks as the shark swims back and forth over and around them until the girls hide behind a metal grate as the shark slams into it repeatedly.

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Animal cell nuclei, except in the gametes sperm and egg , tend to have two sets of chromosomes they are diploid. Viral and plasmid nucleic acids pass from cell to cell where the DNA or RNA perform their replication and coding functions efficiently.

Pieces of the genetic material, virus-sized, pass from one cell into another cell of the same kind. Traveling small replicons of DNA produce genetic and permanently heritable changes in their new locations. Alternatively, part of the virus nucleic acid may be permanently bound to the nuclear DNA of the cell in which it resides.

Viruses may be thought of as degenerate forms that are highly specialized in order to live in specific host cells of free-living organisms. Only cells are capable of performing the metabolic tasks that viruses and plasmids require. Viruses and plasmids must use the genetic transcription apparatus of cells. It may take no more than 10 minutes for a bacterium infected by a single virus to produce new virus particles, bursting forth from the victim bacterium by destroying it.

Plasmids do not burst forth; rather, they benignly incorporate their DNA into that of their host cell. Organisms generated by the same fundamental biochemistry survive, grow, and reproduce in an extraordinarily wide range of conditions on Earth. For example, an alga called Cyanidium caldarium , a eukaryotic and photosynthetic organism, thrives in concentrated solutions of hot sulfuric acid and colours a damp landscape turquoise after a wet volcanic explosion.

A swimming relative, Cyanophora paradoxa , survives in nearly these extremes. Certain less-colourful bacteria and fungi can live in extremely acidic environments pH 0—2. Bright blue-green cyanobacteria of many kinds can grow vigorously in extremely alkaline environments pH 10— Most familiar organisms on Earth are of course sensitive to extreme temperature in their surroundings.

Mammals and birds have evolved internal regulation of their temperatures. Cold-climate organisms have special insulating layers of fat and fur. Most organisms are composed of an estimated 70—80 percent water. The availability of body water is a biological imperative. Certain halophilic bacteria live on water adsorbed on a single crystal of salt. Others such as the kangaroo rat a mammal and Tribolium the flour beetle imbibe no water at all in the liquid state.

They rely entirely on metabolic water—that is, on water released from chemical bonds through the metabolism of food. A variety of plants, including Spanish moss , live without contact with groundwater. They extract water directly from the air , although they do require relatively high humidity.

Desert plants and other plants in very dry environments, such as the two-leaved Welwitschia of the Namib Desert , have evolved extensive root systems that absorb subsurface water from a great volume of adjacent soil. Because the water is under pressure, it is not above the boiling point.

Many organisms employ organic or inorganic antifreezes to lower the freezing point of their internal liquids. Some insects use dimethyl sulfoxide as an antifreeze.

Other organisms live in briny pools in which dissolved salts lower the freezing point. San Juan Pond in Antarctica, for example, contains about one molecule of calcium chloride for every two water molecules. Biological activity does not cease at the freezing point of water.

They are thawed with no decrease in activity. Freezing temperatures alone cause no damage. Rather, frozen water removes tissue fluidity and leaves dangerous salt concentrations in its wake.

The combination of expansion and contraction attendant to freezing and thawing harms membranes. Some arthropods can be severely dehydrated and then revived simply by the addition of water. When encysted in response to dehydration , these arthropods at first glance are indistinguishable from a weathered grain of sand.

Bacteria and fungal spores have been discovered near the base of the stratosphere by balloon searches. Organisms sought at much higher altitudes up to 30, metres [, feet] have been detected; they are few in number and are all propagules.

Birds have been observed to fly at maximum altitudes of 8, metres 27, feet , and on Mount Everest jumping spiders have been found at 6, metres 22, feet. At the opposite extreme, ciliates, pout fish , crabs , and clams have been recovered from ocean depths where pressures are hundreds of times those found at sea level.

At these depths no light penetrates, and the organisms, some of which are quite large with bioluminescent organs that glow in the dark, feed on particles of organic matter raining down from the upper reaches of the oceans. Others sustain themselves by their chemoautotrophic bacterial associations.