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All 3 conditions occur when non disjunction occurs in meiosis of the parent when they are producing gametes (egg or sperm). In normal meiosis, each parent gamete has 1 copy of each of the 22 somatic chromosomes and 1 sex chromosome. Non-disjunction occurs when 2 chromosomes go to one gamete and 0 go to the other.
Trisomy 21 (Down syndrome) is when the zygote has 3 copies (instead of 2) of chromosome 21.
Klinefelter Syndrome (47 XXY) is when the zygote has 2 X chromosomes and one Y (a normal male is XY and a normal female is XX). Since they do have the Y chromosome, they are phenotypically (physically) male.
Turner syndrome (45 X) is when the zygote has only 1 sex chromosome (X chromosome). They are phenotypically male.
What else can I help you with?
Are klinefelter syndrome and Turner syndrome results of nondisjunction of autosomes?
No, Klinefelter syndrome and Turner syndrome are the result of nondisjunction of sex chromosomes. Klinefelter syndrome is caused by an extra X chromosome (XXY), while Turner syndrome is due to a missing X chromosome (XO).
Which of the following are example(s) of trisomy---Turner Syndrome Down's Syndrome or Klinefelter's Syndrome?
Trisomy means having three copies of a chromosomes. Turner's syndrome is NOT an example of trisomy. Someone with Turner's syndrome has only one X chromosome. Down's syndrome IS an example of trisomy. Someone with Down's syndrome has 3 copies of chromosome 21. Klinefelter's syndrome is a tricky one. On one hand, it would be considered trisomy because they have 3 sex chromosomes. However, they are not all the SAME sex chromosomes. Someone with Klinefelter's has 2 X chromosomes and one Y chromosome.
What are the 3 major chromosomal disorders?
The three major chromosomal disorders are Down syndrome, Turner syndrome, and Klinefelter syndrome. Down syndrome is characterized by an extra copy of chromosome 21, Turner syndrome involves a missing or incomplete X chromosome in females, and Klinefelter syndrome is caused by an extra X chromosome in males.
What causes disorders sush as klinefelter syndrome and turner syndrome?
non disjunction of sex chromosomes
Can animals get klinefelters or turners syndrome as humans do?
Yes animals do sometimes have Turner's syndrome or Klinefelter's syndrome with similar characteristics as those observed in humans.
Does a hermaphrodite have klinefelter?
People with Klinefelter's syndrome are not hermaphrodites, and people who are hermaphrodites do not have Klinefelter's syndrome.
Is Klinefelter's syndrome the same as Down syndrome?
Klinefelter = XXY Turner's = X Klinefelter syndrome is the extra X and can lead to somewhat of a female secondary sexual characteristic in men. Turner's is the single X some women receive and can cause short stature and lack of secondary sexual characteristics.
What is a karyotpe able to identify?
Karyotypes are able to tell if there are any chromosome conditions present. These condition include Down syndrome, Turner syndrome, Klinefelter syndrome, and Triploidy.
What are the key differences between Klinefelter syndrome and Turner syndrome?
Klinefelter syndrome is a genetic condition in males where they have an extra X chromosome, resulting in symptoms like infertility and low testosterone levels. Turner syndrome, on the other hand, is a genetic condition in females where they are missing part or all of one of their X chromosomes, leading to symptoms like short stature and infertility.
What are the key differences between Turner syndrome and Klinefelter syndrome?
Turner syndrome is a genetic condition in females where one of the X chromosomes is partially or completely missing, leading to short stature, infertility, and other physical characteristics. Klinefelter syndrome is a genetic condition in males where there is an extra X chromosome, resulting in infertility, low testosterone levels, and other physical characteristics.
What genotypes cause Klinefelter's syndrome?
The only genotype to cause Klinefelter's syndrome is XXY.
Who discover klinefelter syndrome?
Mr. Klinefelter
