The XYY Syndrome Essay Research Paper subject free essay sample

The XYY Syndrome Essay, Research Paper capable = Intro to Biology rubric = XYY Syndrome documents = XYY Males Xyy Syndrome is a rare familial upset which affects males due to an excess Yttrium chromosome. Healthy males have 46 chromosomes including one Ten and one Y chromosome. Work force with XYY syndrome have 47 chromosomes, two of which are Y chromosomes. It is non known why the excess Y chromosome occurs. The upset is present at birth and is estimated to happen in one out of every one thousand unrecorded births. In really rare cases, the syndrome has been passed from male parent to boy, but in most instances heredity can non be established. The features of XYY syndrome are frequently really elusive and do non bespeak and serious chromosomal upset. Therefore, males with this status are often undiagnosed or misdiagnosed. The primary symptoms include tall or really tall tallness which becomes apparent at the age of five or six, and terrible cystic acne during adolescence. We will write a custom essay sample on The XYY Syndrome Essay Research Paper subject or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Lower than mean intelligence and/or behavioural jobs, such as an explosive pique, aggressive or noncompliant actions, or sometimes antisocial behaviour are other symptoms. Some persons with this upset may besides hold linguistic communication troubles or psychosexual jobs. XYY Syndrome is frequently undiagnosed until trials for other medical grounds are performed. Other than being remarkably tall and/or holding behavioural jobs, in many instances, these male childs or work forces appear normal. Physical features of XYY Syndrome may include an exceptionally long caput with a somewhat protrusive brow, long custodies and pess, long ears, mild indenture of the sternum, and/or big dentitions. Poor thorax and shoulder musculus development is besides common. Even though males with this syndrome are big, they tend to be weak and uncoordinated. Some may hold a all right intentional shudder, such as agitating custodies when the attempt to imbibe a glass of H2O. Occasionally, a bony formation across the articulations in the two castanetss of the forearm ensuing in the stiffening of the affected articulations may happen. Other occasional symptoms are undescended testiss, a little phallus, or an gap located on the bottom of the phallus. For a long clip it was thought that XYY Syndrome persons had aggressive inclinations frequently associated with condemnable behaviour due to the excess Y chromosome. Epidemiologic surveies suggest that one out of every 35 institutionalised male juvenile delinquents has XYY Syndrome. However, it is now believed by some research workers that this behaviour is non due to the excess Y chromosome, but instead to the lower than mean intelligence and instruction degrees of these work forces. More research is needed to understand the function of this chromosomal abnormalcy on behaviour.