Which chromosome is affected in Turner syndrome?

Which chromosome is affected in Turner syndrome?

The missing or altered X chromosome of Turner syndrome causes errors during fetal development and other developmental problems after birth — for example, short stature, ovarian insufficiency and heart defects. Physical characteristics and health complications that arise from the chromosomal error vary greatly.

Does Turner Syndrome occur in meiosis 1 or 2?

Nondisjunction may occur during meiosis I or meiosis II. Aneuploidy often results in serious problems such as Turner syndrome, a monosomy in which females may contain all or part of an X chromosome.

Which type of chromosomal mutation is responsible for causing Turner syndrome?

Turner syndrome is caused by partial or complete loss (monosomy) of the second sex chromosome. Chromosomes are found in the nucleus of all body cells.

How is Turner syndrome created?

Turner syndrome occurs when part or all of an X chromosome is missing from most or all of the cells in a girl’s body. A girl normally receives one X chromosome from each parent. The error that leads to the missing chromosome appears to happen during the formation of the egg or sperm.

What is Turner syndrome known as?

Turner syndrome is a chromosomal condition that affects development in females. The most common feature of Turner syndrome is short stature, which becomes evident by about age 5. An early loss of ovarian function (ovarian hypofunction or premature ovarian failure) is also very common.

Can you live a normal life with Turner syndrome?

The long-term outlook ( prognosis ) for people with Turner syndrome is typically good. Life expectancy is slightly shorter than average but may be improved by addressing and treating associated chronic illnesses, such as obesity and hypertension .

Do babies with Turner syndrome survive?

Though girls born with Turner syndrome usually have good odds for a normal life, the majority of babies with the condition are lost to miscarriage or stillbirth.

What are the chances of having a second baby with Turner’s syndrome?

In general, Turner syndrome is considered to be a sporadic condition. Recurrence in subsequent pregnancies is rare, but has occurred. It is assumed that the likelihood of recurrence is similar to that in the general population (in other words, no increased risk for couples who have had a previous affected pregnancy).