What Is Xyy Syndrome?

5. Males transmit their Y chromosome to their sons. This means that sons will not inherit an X-linked recessive condition from their father.

Most of the girls that have Turner Syndrome are way shorter than average girls. The girls often have their normal height up to three years old. After they are three the growth rate starts to slow down. Ovaries that are non-functioning are other symptoms of Turner Syndrome. A girl’s ovaries begin to produce sex hormones at puberty. This doesn’t happen with most girls who have Turner Syndrome. Most don’t start their periods or develop breast

Originally, researchers and scientists thought a duplication in the Y chromosome was the connection between how genetics influence crime. The male karyotype would be XYY instead of XY. They have a tendency for hyper-aggressiveness and violence (Wachbroit). This unique karyotype also leads to a significant number of abortions if the fetus carries the karyotype. The other effects of this mutation are men that are taller, less intelligent, hyperactive, and are more impulsive (Wachbroit). After much research no one could relate this to how it

The patient whose chromosomes are organized on the Karyotype Worksheet #1, is a normal female as indicated by her XX sex chromosomes, with a total number of 46 chromosomes and her karyotype doesn’t exhibit any aneuploidy or structural errors.

Researchers in the 1960’s pursued men with “XYY syndrome”, or a surplus male chromosome. Studies show that males with an extra chromosome are generally more aggressive, violent, and it is statistically proven that men with this extra ‘maleness’ have a far greater tendency towards criminal activity. There is an estimated 100,000 males with this ‘alpha male disease’ in the United States alone, and a larger percent of those men are in prison, than the population at large. Richard Speck, a seaman with a murder count above nine, was diagnosed with the XYY syndrome, and sentenced to 400 years in prison.

This came to attention in 1966, when a man was put on trial and convicted of the rape and the murder of eight students. At trial, it was introduced that he was suffering from XYY syndrome and his defense attorney argued he should be excused for his actions because he was suffering from XYY Syndrome. In spite of his legal defenses argument a death sentence was handed down by the jury and it was discovered later that the man in fact did have a normal genotype.

The gene is mutated and it affects more males than females. Individuals with Fragile X have a large number of defects and disabilities including physical, cognitive, and neurobehavioral features (Jewell, J., 2004). This disability is caused by a gene that inactive which is the X chromosome. There is no known cure, yet, options are available to those who have this disorder. Individuals may receive speech therapy, physical therapy, and psychological services. For children attending school they may qualify for special education. Delays in cognition and learning are often associated with this syndrome. That's why; learning can be more challenging for these individuals. The impairments differ for those impacted with the syndrome. Accommodations are essential in order to meet the needs for each

The SRY gene is a very important aspect in determining the sex of an individual. In fact it is the SRY that specifically could be seen as the powerhouse machine in determining the sex of an individual. The SRY gene commonly called the Sex Determining Region of the Y- chromosome can normally cause the testis to develop rather than an ovary when it is presented in the chromosome. The function of the SRY gene is to provide a set of instructions for making the Sex-Determining region of the Y protein, which can also perform as a transcription factor, binding to specific regions of DNA and aid in the control and regulation of particular genes. Changes

About 1 in 4,000 males and 1 in 8,000 females have Fragile X syndrome. Although Fragile X syndrome is rare, permutations in the FMR1 gene are common. A study we researched of 6,747 people found that 1 in 151 women and 1 in 468 men had the permutation. People with the permutation on the FMR1 may not have any symptoms of Fragile X. This permutation on the FMR1 can change from generation to generation, which can cause Fragile X syndrome. Fragile X is usually less common in females. A female usually inherits two X chromosomes, one from each parent (XX). If one of the X chromosomes has the fragile X mutation, and the other X chromosome does not, that can give incorrect genetic information. About half of affected females do not show any symptoms of fragile X syndrome because one X chromosome that is not affect over shadows the X chromosome that is affected. In males, fragile X is more common and even worse. A young male usually inherits one X chromosome (XY). If that X chromosome has the fragile X mutation, the male will more than likely have the full permutation of Fragile X because the Y chromosome does not carry the genetic

An example of a recessive x-linked disorder is fragile x-syndrome or FXS. Fragile x-syndrome affects a person’s behavior, learning, intellectual, as well as physical characteristics. Fragile x-syndrome is more likely to affect males over females and does not shorten their life expectancy. Males who have FXS can have ADD or ADHD, autism, aggression and other behavioral traits. Men can have physical alterations such as a long face, large ears, and flat feet. Women who have FXS can experience the same behavioral traits but are usually milder in comparison to men. The same is shown through the facial features for women (National Fragile X Foundation,

The chromosomal abnormality that appears in the karyotype in Figure four is an extra chromosome 23, which happens to be an X chromosome. This abnormality originated from the mother because nondisjunction

Klinefelter's Syndrome is a genetic disorder that only affects men. Those affected are born with an extra X chromosome (Belts & Frey, 2006). In 1942, Dr. Harry Klinefelter released a study concerning nine men who had little to no facial hair, enlarged breasts, small testicles, and were unable to produce sperm. The name of this syndrome originated from Dr. Klinefelter's name (Kenny & Henderson, 2015). This disease is often abbreviated as KS or referred to as 47 XXY. It is referred to as 47 XXY because of the extra chromosome in patients (Schoenstadt, 2016).

Turner Syndrome is caused by a missing or incomplete X chromosome. People who have Turner Syndrome develop as females. Some of the genes on the X chromosome are involved in the growth of your height and sexual development, which is why girls with this disorder are shorter than normal and have incompletely developed sexual characteristics. Within this disorder there can be many symptoms, for example: swelling hands and feet, heart defeat, pregnancy chorionic villus sampling or amniocentesis. There are also major causes contributing to this disorder including a stocky build, arms that turn out slightly at the elbow, receding low jaw, a short webbed neck and low hair line on the back of the neck. Also includes backtracked puberty, ovaries undeveloped properly and effects sexual development.

The XXY syndrome, most commonly known as Klinefelter syndrome (KS), only affects males of all ages. This syndrome occurs when there is a random genetic error after conception and is not curable, however treatment can help.All females have XX chromosome and all males have XY chromosomes. Unlike the normal XY type that all males have, males affected have an additional X chromosome which results into many symptoms such as impaired spermatogenesis, low testosterone, and male hypogonadism. Since Klinefelter syndrome is related to the sex chromosomes of males, it is a sex link trait.

Studies found that the extra Y chromosome is related to aggressive and antisocial behavior and associated with mental retardation.