chromosome 18 is the gene or chromosome that is affected by edwards syndrome.
chromosome 18 is the gene or chromosome that is affected by edwards syndrome.
what gene or chromosome is affected by edwards syndrome?
chromosome 18
a small percentage of cases occur when only some of the body's cells have an extra copy of chromosome 18, resulting in a mixed population of cells with a differing number of chromosomes. such cases are sometimes called mosaic edwards syndrome. very rarely, a piece of chromosome 18 becomes attached to another chromosome (translocated) before or after conception. affected individuals have two copies of chromosome 18 plus extra material from chromosome 18 attached to another chromosome. with a translocation, a person has a partial trisomy for chromosome 18, and the abnormalities are often less severe than for the typical edwards syndrome.
edwards syndrome
edwards syndrome is a chromosomal abnormality characterized by the presence of an extra copy of genetic material on the 18th chromosome, either in whole (trisomy 18) or in part (such as due to translocations). the additional chromosome usually occurs before conception. the effects of the extra copy vary greatly, depending on the extent of the extra copy, genetic history, and chance. edwards syndrome occurs in all human populations, but is more prevalent in female offspring.
edwards syndrome