Turner syndrome is the result of one of the two X chromosomes being missing or damaged in some or all cells. These chromosomes are the sex chromosomes, which determine whether a person will be male or female. As people with Turners only have an X chromosome and no Y chromosome they are born female.
The X chromosomes - one of the two X chromosomes other females have is missing.
When an X chromosome is missing and someone only has 1 sex chromosome.
This is not a good question. The Turners Syndrome only occurs in women, and it is not inherited, because these women cannot have their own children. No causes have been discovered yet.
Non-disjunction can result in a number of different conditions, including Down Syndrome, Klinefelter Syndrome, Turner's Syndrome, Super Males, Triple X syndrome or Edward's Syndrome.
At present this is not possible.
The l virus that usually causes mononucleosis is the "Epstein-Barr virus". However it can also be caused by "Cytomegalovirus".
Klinefelter syndrome is a chromosomal condition that only affects males and is characterized by a male having an additional X chromosome (XXY) in cells. This chromosome abnormality occurs when there is an error in cell division, resulting in an extra copy of the X chromosome.
This is not a good question. The Turners Syndrome only occurs in women, and it is not inherited, because these women cannot have their own children. No causes have been discovered yet.
non disjunction of sex chromosomes
non disjunction of sex chromosomes
If one of sex chromosomes is missing. Normal-XX Turner- XO
Mistakes in meiosis may cause Down syndrome. The error happens when the chromosomes segregate into the gametes. The egg or sperm may have too many or too few chromosomes. Down syndrome has an extra chromosome in the 21st pair.
Down syndrome is purely genetic. There are no known environmental causes of the disorder. It is not a disease that is passed from parent to child. It is simply an disorder when the chromosomes split during cell division during development. The mayoclinic describes the causes: http://www.mayoclinic.com/health/down-syndrome/DS00182/DSECTION=causes
Down syndrome is neither caused by dominant or recessive chromosomes it is simply caused by an error in the translation process of chromosome 21.
Non-disjunction can result in a number of different conditions, including Down Syndrome, Klinefelter Syndrome, Turner's Syndrome, Super Males, Triple X syndrome or Edward's Syndrome.
At present this is not possible.
Nondisjunction results in cells with abnormal numbers of chromosomes due to chromosomes not separating properly in meiosis. this causes some cells to end up with to many chromosomes and others to end up with not enough chromosomes. It messes up cell division and development and can lead to death or genetic disorders like down syndrome.
Deletion Mutation causes DiGeorges Syndrome.
The l virus that usually causes mononucleosis is the "Epstein-Barr virus". However it can also be caused by "Cytomegalovirus".