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How do the cells of people with down syndrom differ from those of others?
People with down syndrome have cells with an extra chromosome 21.
What condition results when a child is born with an extra chromosome on the third pair?
Down syndrome
This human karyotype is unusual because chromosome set?
21 has an extra genetic material .
Why does an extra copy of one chromosome cause so much trouble?
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 are four types of chromosomal mutations?
Four types of chromosomal mutations are Down syndrome (which is a mutation in which there are three copies of chromosome 21), Kinefelter Syndrome (which is a mutation in which a male has an extra X-chromosome), Turner Syndrome (which is a mutation in which a female is missing an X-chromosome), and Patau Syndrome (which is a mutation in which there are three copies of chromosome 13).
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 is the relationship between trisomy 21 and Down syndrome?
Trisomy 21 is down's syndrome, which is an extra copy of chromosome 21
An individual with an extra copy of chromosome 21 demonstrates traits collectively know as?
down syndrome
How do the cells of people with down syndrom differ from those of others?
People with down syndrome have cells with an extra chromosome 21.
What condition occurs when a person's cells have an extra copy of chromosome 21?
down syndrome !! hope this helps
What does the karyotype of a person with down syndrome show?
A genetic disorder caused by the presence of all or part of a third copy of chromosome 21.
Causes Down Syndrome?
Having an extra copy of chromosome 21. You are supposed to have 2; when you have 3 (trisomy 21), Down's Syndrome is the result.
What does it mean when someone has an extra chromosome?
If someone has an extra chromosome it means there was a genetic mutation that is abnormal in human development. It may result in problems with the person affecting them on a basic level, or may go fully unnoticed. A common disorder that can be caused by having an extra chromosome is Down's Syndrome.
Is the extra copy of Chromosome 21 that causes Down syndrome dominant or recessive?
Down syndrome is neither caused by dominant or recessive chromosomes it is simply caused by an error in the translation process of chromosome 21.
How was Down syndrome identified?
Genetic testing, the presence of an extra copy of chromosome 21, a condition often referred to as trisomy 21 is indicative of Down Syndrome.
