Question 1

how many chromosome defects cause retardation?

Accepted Answer

Hundreds at least: We only know about a few hundred, probably thousands possible as each human is unique as are their choomasome array.

Question 2

are all diseases caused by a problem on one of our chromosomes?

Accepted Answer

No, many reasons: Most diseases are caused by infectious agents (viruses, bacteria, fungus, molds, parasites). Some are caused by environmental toxins and some are by defective chromosomes.

Question 3

can anyone tell me what causes a gain of chromosomes in an adult?

Accepted Answer

: People don't gain chromosomes as adults. If you have an extra chromosome as a fetus, development is abnormal, either before birth or during childhood and adulthood. The best known is an extra chromosome 21: Down's syndrome.

Question 4

which chromosome causes cml?

Accepted Answer

Chromosomes 9 and 22: ...are abnormally spliced together in most cases of CML forming a characteristic translocation referred to as the Philadelphia chromosome. At the molecular level this causes a fusion of two genes (BCR and Abl).

Question 5

how is progeria caused in the chromosomes?

Accepted Answer

Most new mutations: Progeria is a self limited process with most recorded cases appearing as new mutations in families that have other normal children. There are rare sibships reported indicating an autosomal recessive form exists.Most don't survive their teens.The oldest on record died at 27.

Question 6

i have a correction to make:  was is caused by a mutation in the x chromosome. females are the carriers and males are affected.  ?

Accepted Answer

Yes: Wiskott-aldrich syndrome is an example of x-linked recessive disorder.

Question 7

do abnormal chromosomes cause cancer?

Accepted Answer

Yes. But all: Chromosomal abnormalities are not equal. Some during development are lethal and cause of sponaneous abortion (fetal demise), others cause developmental sydromes, trisomy 21 and down syndrome; trisomy 18 and edwards syndrome. The bcr-abl translocation causes cml. Many cancers have losses or gains of unkown significance.

Question 8

what chromosome causes myofibrillar myopathy?

Accepted Answer

Several: Changes in these genes are associated with myofibrillar myopathy.
Bag3
cryab
des
flnc
ldb3
myot
you would need to check each of these for their chromosome position.

Question 9

dwarfism is caused by the mutation of which chromosome?

Accepted Answer

Many types: There are many different types, for example, the most common type is achondroplasia which is on the short arm of chromosome 4.

Question 10

what is the main cause of chromosomal abnormality in fetus?

Accepted Answer

Defect in gamete: Either the egg (usually) or sperm carries an extra chromosome (chm) to conception.The fetus ends up with 3 of that chm along with normal pairs of all the others. The third chm will cause a disruption in the code reading that goes into making the organs and brain. The newborn will be born with these defects.

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Doctor answers about:

Chromosomal nondisjunction causes

A member asked:

How many chromosome defects cause retardation?

A member asked:

Are all diseases caused by a problem on one of our chromosomes?

A member asked:

Can anyone tell me what causes a gain of chromosomes in an adult?

A member asked:

Which chromosome causes cml?

A member asked:

How is progeria caused in the chromosomes?

A member asked:

I have a correction to make: was is caused by a mutation in the x chromosome. females are the carriers and males are affected. ?

A member asked:

Do abnormal chromosomes cause cancer?

A member asked:

What chromosome causes myofibrillar myopathy?

A member asked:

Dwarfism is caused by the mutation of which chromosome?

A member asked:

What is the main cause of chromosomal abnormality in fetus?

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