What traits does chromosome 9 carry?
Research shows that several genes that control cell growth and division are located on chromosome 9. Many of these genes are tumor suppressors, which means they normally help prevent cells from growing and dividing in an uncontrolled way.
What does the chromosome 9 do?
Chromosome 9 likely contains 800 to 900 genes that provide instructions for making proteins. These proteins perform a variety of different roles in the body.
What is chromosome 9 disorder?
Chromosome 9, Trisomy 9p is a rare chromosomal disorder in which a portion of chromosome 9 appears three times (trisomy) rather than twice in cells of the body. The trisomy may involve a portion of the short arm (9p), the entire short arm, or the short arm and a segment of the long arm (9q).
What happens when you are missing chromosome 9?
Most infants with Chromosome 9, Partial Monosomy 9p have a normal birth weight and length. However, the disorder is typically characterized by variable delays in the acquisition of skills requiring the coordination of mental and physical activities (psychomotor retardation) and moderate or mild mental retardation.
What causes Triploidy?
What causes triploidy? Triploidy is the result of an extra set of chromosomes. This can occur when two sperm fertilizing one normal egg or a diploid sperm fertilizes a normal egg. It can also occur when a normal sperm fertilizes an egg that has an extra set of chromosomes.
Is Edwards Syndrome genetic?
Edwards syndrome is a genetic condition in babies that causes severe disability. It is caused by an extra copy of chromosome 18 and babies born with the condition usually do not survive for much longer than a week.
Is trisomy 9 Down syndrome?
Trisomy 9p is the fourth most common type of trisomy after trisomy 21 (Down syndrome), trisomy 18 (Edwards’s syndrome) and trisomy 13 (Patau syndrome).
What are the characteristics of Williams syndrome?
Newborns with Williams syndrome have characteristic “elfin-like” facial features including an unusually small head (microcephaly), full cheeks, an abnormally broad forehead, puffiness around the eyes and lips, a depressed nasal bridge, broad nose, and/or an unusually wide and prominent open mouth.
What is Kleefstra syndrome?
Kleefstra syndrome is a disorder that involves many parts of the body. Characteristic features of Kleefstra syndrome include developmental delay and intellectual disability, severely limited or absent speech, and weak muscle tone (hypotonia).
What is Trisomy 9 called?
Mosaic trisomy 9 is a rare chromosomal disorder in which the entire 9th chromosome appears three times (trisomy) rather than twice in some cells of the body. The term “mosaic” indicates that some cells contain the extra chromosome 9, while others have the typical chromosomal pair.
Which of the following genetic disorders is created by a translocation between chromosome 9 and chromosome 22?
A rearrangement (translocation) of genetic material between chromosomes 9 and 22 causes a type of cancer of blood-forming cells called chronic myeloid leukemia. This slow-growing cancer leads to an overproduction of abnormal white blood cells.