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that is still not clear, and it is one of the reasons scientist have worked so hard to learn the DNA sequence for chromosome 21. Now researchers know all of the genes on the chromosome, they can begin experiments to find the exact genes that cause problems when present in three copies.
What else can I help you with?
What is cased by an extra copy of chromosome 21?
Also referred to as trisomy 21. Down Syndrome.
What is the condition in which an individual has three copies of a chromosome?
The condition in which an individual has three copies of a chromosome is called trisomy. It can result in genetic disorders such as Down syndrome, which is caused by an extra copy of chromosome 21.
How do the cells of people with down syndrom differ from those of others?
People with Down syndrome have an extra copy of chromosome 21 in their cells, leading to 47 chromosomes instead of the usual 46. This genetic condition can result in various physical and cognitive differences, such as distinctive facial features and intellectual disabilities, compared to individuals without Down syndrome.
Trisomy is a mutation that results in a cell having an extra?
A trisomy is a condition in which a person has three copies of a chromosome instead of the usual two copies. A person can have full trisomy (three copies in every cell) or mosaic trisomy (three copies in some cells but not all).
What types of Down syndrome are there?
There are three different types of Down syndrome: Standard Trisomy 21, Translocation, and Mosaicism. Standard Trisomy 21 is when the extra chromosome 21 comes from either the egg or sperm cell. Between 90% and 95% of all Down syndrome is Standard Trisomy 21.
What is the term for an individual who has an extra copy of one chromosome or is missing a chromosome - Is it something-'ploid'?
Aneuploid - the individual has an extra copy of one chromosome or is missing a chromosome.
What is the cause of holoprosencephaly?
Holoprosencephaly has no single cause, but about half of all cases are associated with abnormal karyotype (abnormal numbers of chromosomes), especially trisomy 13 (extra copy of chromosome 13) and trisomy 15 (extra copy of chromosome 15).
A person who has an extra copy of a chromosome is said to have?
TRISOMY
What is the correct term for an individual who has an extra copy of one chromosome or is missing a chromosome?
Singnalurear
Which genetic disorder does an extra chromosome cause?
An extra chromosome can cause genetic disorders such as Down syndrome, which is caused by an extra copy of chromosome 21. This leads to developmental delays, intellectual disabilities, and certain physical characteristics.
What type of mutation causes Edwards' syndrome?
An extra copy of Chromosome 18
What is Edwards' syndrome?
Edwards' syndrome is caused by an extra copy of chromosome 18
Will a child have autism if an extra chromosome is on the 21 pair?
no, an extra copy of chromosone 21 causes down syndrome
Down syndrome is usually caused by an extra copy of what chromosome?
Down syndrome occurs because of the extra chromosome on chromosome 21. If you go onto google images and type in karyotype of Down syndrome, you will find a picture of the extra chromosome. Instead of having two chromosomes on chromosome 21, there is an extra. Type your answer here...
What does an individual with an extra copy of chromosome 21 demonstrait traits of having?
down syndrome
What chromosomal mutation causes an extra copy of chromosome 13?
Trisomy 13, also known as Patau syndrome, is a chromosomal mutation where there is an extra copy of chromosome 13 in each cell. This condition can lead to various physical and intellectual disabilities.
How does trisomy occur?
Trisomy occurs when an individual has three copies of a particular chromosome instead of the usual two. This can happen during the formation of sperm or egg cells, leading to an extra copy of the chromosome in the resulting embryo. Trisomy can result in conditions like Down syndrome, where there is an extra copy of chromosome 21.
