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The following conditions are caused by changes in the structure or number of copies of chromosome 7: Williams syndrome is caused by the deletion of genetic material from a portion of the long (q) arm of chromosome 7. The deleted region, which is located at position 11.23 (written as 7q11.23), is designated as the Williams syndrome critical region.
7q11.23 duplication syndrome (also called dup7 or 7dup or duplication of the Williams-Beuren syndrome critical region) is a rare genetic syndrome caused by micro-duplication of 1.5-1.8 mega base in section q11.23 of chromosome 7. This syndrome is characterized by a wide spectrum of neurological, behavior and other medical problems which may ...
Greig cephalopolysyndactyly syndrome is a chromosomal condition related to chromosome 7. Mutations in the GLI3 gene cause Greig cephalopolysyndactyly syndrome. The GLI3 gene provides instructions for making a protein that controls gene expression, which is a process that regulates whether genes are turned on or off in particular cells.
The following is a list of genetic disorders and if known, type of mutation and for the chromosome involved. Although the parlance "disease-causing gene" is common, it is the occurrence of an abnormality in the parents that causes the impairment to develop within the child. There are over 6,000 known genetic disorders in humans.
7p22.1 microduplication syndrome (also called Trisomy 7p22.1) is a genetic disorder which is characterized by cranial and facial dysmorphisms, intellectual disability, and motor-speech delays. [1] It is caused by a duplication of the p22.1 region of chromosome 7.
[citation needed] An example of trisomy in humans is Down syndrome, which is a developmental disorder caused by an extra copy of chromosome 21; the disorder is therefore also called "trisomy 21". [7] An example of monosomy in humans is Turner syndrome, where the individual is born with only one sex chromosome, an X. [8]
Heimler syndrome is a rare autosomal recessive condition characterized by ... PEX 1 is located on long arm of chromosome 7 (7q21).2 PEX 6 is located on the short ...
Chromosomes in Down syndrome, the most common human condition due to aneuploidy. There are three chromosomes 21 (in the last row). A chromosomal disorder is a missing, extra, or irregular portion of chromosomal DNA. [33] It can be from an atypical number of chromosomes or a structural abnormality in one or more chromosomes.