0
What else can I help you with?
What gene is affected in Down Syndrome?
It is the result of a chromosomal abnormality, in which there is an extra chromsome on the chromosome 21 pair. This is call trisomy 21.
What is trisomy syndrome?
In a trisomy syndrome, an extra chromosome is present so that the individual has three of a particular chromosome instead of the normal pair.
What is unisomy?
Unisomy is a genetic condition where an individual has an extra copy of a single chromosome instead of the normal pair. This can lead to various medical conditions or developmental delays depending on which chromosome is affected. Examples of unisomy conditions include Down syndrome (Trisomy 21) and Klinefelter syndrome (XXY).
Trisomy 21 Down syndrome xxy kleinfelter syndrome and xo turner syndrome are all caused by?
Nondisjunction -Trisomy 21(Down Syndrome) means there are 3 chromosomes on the 21st pair of chromosomes. -Kleinfelters (XXY) means there is an extra chromosome on the 23rd pair(where the sex chromosomes lie). -Turner Syndrome(XO) On the 23rd pair, there is no Y or second X chromosome. The female can survive with this.
What condition results when a child is born with extra chromosome on the twenty -first pair?
Down syndrome
What is a chromosome pair that has a extra chromosome attached to it?
A Trisomy 1. Another said this was Down's Syndrome.
Which process could result in the type of cell mutation that causes Down syndrome?
Down's syndrome is caused by trisomy of the 21st chromosome. This is mostly caused when the chromosome pair fails to separate properly (nondisjunction).
Is Down syndrome also known as Monosomy 21?
No, that is false. Down Syndrome is also known as Trisomy-21. Monosomy is a condition where one chromosome is missing from what should be a pair in every cell throughout the body. Trisomy indicates a chromosome has three copies instead of a pair.
Which type of mutation can lead to the loss of gene chromosome?
The term is monosomy, in which one chromosome of a pair is missing. Turner's Syndrome is an example of monosomy, in which there is only one sex chromosome, which is the X chromosome. Humans with Turner's Syndrome are female, but sterile. The genotype of the sex chromosomes in Turner's Syndrome is XO, in which O represents a missing chromosome.
What causes the abnormality in chromosome numbers in people with down syndrome?
It is most commonly caused by increased maternal age.Add: It is the result of nondisjunction of the 21st chromosome pair, in which the pair fails to separate, so that one cell gets an extra copy of chromosome 21.
Will a child have autism if an extra chromosome is on the 21 pair?
no, an extra copy of chromosone 21 causes down syndrome
What condition results when a child is born with an extra chromosome on the third pair?
Down syndrome
