Is homocystinuria a gene problem or chromosomal disorder?

Both. The genome is made out of chromossomes which carry dna from both parents. This has similarities to marfan syndrome and it is of dominant inheritance so 50% chance of passing it to the next generation.

Related Questions

Is homocystinuria a genetic or chromosomal disorder?

See below. Homocystinuria is a genetic disorder which affects the metabolism of the aminoacid methionine. It is inherited as a autosomal recessive trait trait, ie the child must inherit the non working gene from both the parents to be affected. It presents as failure to thrive, mental retardation, visual problems and bone problems. Read more...

Is methemoglobinemia a chromosomal disorder or a gene disorder?

Acquired and genetic. Your ethnicity wouldn't include Yakutsk people of Siberia? methemoglobin, like hemoglobin, acquires oxygen, but whereas hemoglobin will let go of it for use in our tissues, methemoglobin won't let go. Not a good situation. Some make methemoglobin when exposed to some chemicals like benzocaine, or nitrites. There are 2 inherited forms. http://www.nlm.nih.gov/medlineplus/ency/article/000562.htm. Read more...

I was wondering is breast cancer a gene or chromosomal disorder?

Yes and No. I think you are really asking if breast cancer is hereditary, meaning is it past from a parent it is possible to inherit a predisposition to breast cancer. There are a few genes known to cause this like brca 1 ; 2 and tests can be done for them. On the other hand all breast cancers have genetic abnormalities. These changes however were not inherited but happened in the patient. Read more...

Help please! Is color blindness a gene disorder or a chromosomal disorder?

The same. Genes are the elements of the chromosomes and so a disorder of a gene will be carried on a chromosome (usually the x for most color blindness). It is like saying is an apartment the same as an apartment building. Read more...