0
Down syndrome is AKA Trisomy 21.
there are 3 autosomes on the 23 chromosome. it isn't x linked, but is randomly mutated and in some cases autosomal.
What else can I help you with?
What condition results when a child is born with an extra chromosome on the third pair?
Down syndrome
What are some diseases non-disjunction causes?
No " following, but a condition such as trisomy 21, Downs syndrome, is caused by nondisjuction. The chromosomes fail to separate properly and one child is left with an extra chromosome number 21. The potetial other children that could have been born of this nondijuction event, those with only one chromosome 21, are not viable.
What is it called when an individual has three copies of a chromosome?
The presence of three copies of a chromosome is known as a trisomy. An example would be Trisomy 21, also known as Down Syndrome.
Why is it that a mongoloid person have 65 chromosomes?
People with Down syndrome, also called mongoloidism have 47 chromosomes. Having 65 chromosomes would be lethal, as normally having 47 chromosomes is lethal. Down syndrome is also known as trisomy 21, because instead of two copies of chromosome 21, a person with Down syndrome has three copies, which accounts for the 47th chromosome.
Down syndrome involves trisomy?
Yes, Down syndrome is typically caused by trisomy 21, which means there is an extra copy of chromosome 21. This condition can lead to developmental delays, intellectual disability, and certain physical characteristics.
What is a duplicated chromosome?
A duplicated chromosome is a chromosome that has an exact copy of itself attached to it. This duplication occurs during the cell replication process and can lead to genetic abnormalities if not properly regulated. It can result in conditions like Down syndrome or cancers.
What can an extra chromosome do?
Having an extra chromosome, known as trisomy, can lead to genetic disorders such as Down syndrome (trisomy 21) or Edwards syndrome (trisomy 18). These disorders can affect physical and intellectual development, leading to characteristic features and health challenges. The specific impact of an extra chromosome varies depending on which chromosome is affected.
What causes disorders such as klinefelter syndrome and turner syndrome?
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.
Trisomy-21 results from a mutation to the chromosomes in?
Trisomy-21, also known as Down syndrome, results from an extra copy of chromosome 21. Instead of the usual two copies, individuals with Down syndrome have three copies of chromosome 21. This extra genetic material can lead to various physical and cognitive differences.
What is the presence of three of a particular chromosome?
The presence of three copies of a particular chromosome is known as trisomy. This genetic condition can lead to developmental abnormalities, such as Down syndrome which is caused by trisomy of chromosome 21.
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 nondisjunction in chromosomes and what is the result?
Nondisjunction is the failure of chromosome pairs to separate properly during cell division. This can result in an abnormal number of chromosomes in the daughter cells, which can lead to genetic disorders such as Down syndrome.
