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People with down syndrome have how many chromosomes?
47There are 47 chromosomes in someone with Down syndrome; the 21st pair has an extra chromosome. Most people have 46 chromosomes. Down syndrome is also known as "Trisomy 21" - a reference to the fact that someone with Down syndrome has 3 pairs of chromosomes on their 21st pair.
How can people with Down's Syndrome ovulate although they have 47 chromosomes not 2N?
They cannot. They can experience menstruation, but there is no ovum produced.
How many chromasomes do kids with down syndrome have?
47 chromosomes
Can Down syndrome spread to other people?
No, Down syndrome is not contagious. It is a genetic/chromosomal difference - some may equate it to a birth defect, others to a birth enhancement
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.
What is the genetic complement of an individual with Down syndrome?
An individual with down syndrome has one extra chromosome beyond 2N. Down syndrome is designated trisomy 21 or 47,XX+21.
What effect does Down syndrome have on the chromosomes?
Down syndrome is usually caused by a condition known as Trisomy 21, which means that a person has three copies of Chromosome 21, rather than the usual two copies. An extra chromosome is added. The normal amount is 46, but people with Down syndrome have 47.Occasionally, the condition is a result of part of Chromosome 21 becoming fused to the end of another chromosome.More info on Chromosome 21While Chromosome 21 isn't the shortest chromosome, it is the one that contains the fewest genes (other than the Y chromosome). This is because genes on Chromosome 22 are more closely spaced, and thus the chromosome contains more genes, despite its smaller size.
What condition occurs when a human zygote has 47 chromosomes?
Trisomic condition in which there is one extra chromosome on an autosome. For eg. Down's Syndrome
What is down syndrome disorder?
genetic condition in which a person has 47 chromosomes instead of the usual 46
How many chromosomes does a person with down syndrome?
Down syndrome is when you have a trisomy of chromosome number 21. So that means they have 47 chromosomes. An older name for Down Syndrome is Mongolism. That was considered a racist term because it made fun of the features of people from Mongolia. Its use was dropped in 1965 after a delegate from Mongolia asked that the name be dropped as a medical term.
How many chromosomes are present in each cell in this human?
There are 46 chromosomes in a normal human cell and 23 in the sex cells. People with down syndrome has 47 chromosomes.
Is down syndrome a dominant trait or recessive trait?
Down syndrome is neither dominant nor recessive.It is "autosomal" or "other"; it is simply an error in the translation process of Chromosome 21 (three copies instead of two). Instead of 46 chromosomes, a person with Down syndrome will have 47.
