Join now. genetic accidents. Some may have characteristic findings while others won't be diagnosed until later in life dep ... Turner syndrome occurs when there is one x chromosome missing.Boys get y chromosome from the fatther and x from mother, girls get x from the father an ... what is the difference between down syndrome and turner syndrome? The incidence of Down syndrome is 1 in 700 newborns, while the incidence of Turner syndrome is 1 in 5,000 births. It results when a female's cells have one normal X chromosome and the other sex chromosome is either missing or structurally altered (females without Turner syndrome have two normal X chromosomes in each cell, and males have one X and one Y chromosome).Signs and symptoms may include short … Turner syndrome: The most common sex chromosome disorder in females, characterized by short stature, webbed neck, broad shield-like chest, wide-spaced nipples, increased carrying angle at the elbow (cubitus valgus), short fourth finger, and malformations of the heart and aorta. Join now. Thus, it is trisomy 21 and is represented as 45 + XY or 45 + XX. is turner syndrome inherited from the mom or the dad. Signs and symptoms vary among those affected. The missing genetic material affects development before and after birth. At least several individuals have been fert ... About 1/2, 500 females are born with turner's syndrome. Also, Down Syndrome is Trisomy 21, which has nothing to do with the sex chromosomes. Down syndrome or Mongolism is autosomal disorder and turner and klinefelter's syndrome are sex chromosomal disorder caused due to non disjunction. Ask your question. Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. TS was first described in the United States in 1938 by Dr. Henry Turner. It is a chromosomal condition describing girls and women with common features, physical traits and medical conditions caused by the complete or partial absence of the second sex chromosome. An abnormal human female phenotype, called Turner syndrome, was described by H. H. Turner and associates 1938. The coexistence of double aneuploidy is very rare; Down-Turner published reports showed mosaicism related to two or more cell lines; the first case was reported in 1971 [1–3]. Cardiac transplantation in children with Down syndrome, Turner syndrome, and other chromosomal anomalies: A multi-institutional outcomes analysis. Common symptoms? Mental deficiency is not associated with this syndrome. Turner syndrome (TS), also known 45,X, or 45,X0, is a genetic condition in which a female is partly or completely missing an X chromosome. The intelligence of those with Turner syndrome is usually within the normal range. This type of Down syndrome, Trisomy 21, accounts for 95% of cases. These can be explained by saying that both the terms are problems related to the sex chromosomes, as in the earlier one there is lacking of one of the sex chromosomes and so-called as monosomy (2n-1), while the latter consist of the extra sex chromosome and so-called as trisomy (2n+1). Turner Syndrome occurs in a female fetus with an incomplete or missing X Chromosome, with characteristic features, Non-Verbal Learning Disabilities, short stature & infertility. Signs and symptoms vary among those affected. Turner syndrome is related to the X chromosome, which is one of the two sex chromosomes.People typically have two sex chromosomes in each cell: females have two X chromosomes, while males have one X chromosome and one Y chromosome.Turner syndrome results when one normal X chromosome is present in a female's cells and the other sex chromosome is missing or structurally altered. Males have an X and a Y). What are the possible causes? Turner syndrome (TS) occurs in approximately one out of every 2,000- 4,000 female live births. By using our website, you consent to our use of cookies. where chromosome 21 become trisomy. Top answers from doctors based on your search: Connect by text or video with a U.S. board-certified doctor now — wait time is less than 1 minute! 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