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Created with Fabric.js 1.4.5 Breif Description:It is a disease that is caused from part of chromosome 5 being deleted. It causes many symptoms, but the most famous is the cat-like cry children make before age 2. Work Cited: Genetic Science Learning Center. "Cri-du-Chat Syndrome." Learn.Genetics 24 February 2015"Cri-du-chat Syndrome." Genetics Home Reference. Genetics Home Reference, n.d. Web. 25 Feb. 2015."Learning About Cri du Chat Syndrome." National Human Genome Research Institute. National Human Genome Research Institute, n.d. Web. 26 Feb. 2015. "Cri Du Chat Syndrome." Cri Du Chat Support Group of Australia. Cri Du Chat Support Group of Australia, n.d. Web. 26 Feb. 2015. Cri du Chat is when the voice box becomes under developed due to part of chromosome 5 being deleted. (as shown in the diagrams above) The disorder becomes harder to identify as the victim gets older, usually 2 and older, but the life expectancy is normal. This disease was discovered by Jerome Lejeune, the same person who discovered Down syndrome.It does not have any other forms and is not more common in one ethnicity.It is slightly more common in women, the ratio being 3 girls to 2 boys. What is Cri du Chat? Other Names: 5p deletion syndrome (because of the chromosome)5p- syndrome (because of the chromosome)cat cry syndrome (because of the symptoms)chromosome 5p- syndrome (because of the chromosome)monosomy 5p (because of the chromosome)It is French for cry of the cat (because of the symptoms) Causes: It happens during meiosis during the creation of the sperm or egg cell.It usually happens during the Metaphase.If the chromosomes do not line up correctly or if it breaks it may lose pieces, in this case part of chromosome 5.Sometimes a broken chromosome can be passed down by a parent who had the disease. Victim QHQ Symptoms: cat-like sound from under developed voicebox intellectual disability mental retardation delayed development small head size (at birth) small weight at birth weak muscle tone (at birth) widely set eyes low-set ears a small jaw a round face some have a heart defect It is one of the most common diseases that is related to chromosome deletion, affecting between 1 in 20,000 and 1 in 50,000 babies. How common is the disorder? How do you test for it? Before the baby is born, there are 2 ways to test for it: 1. Testing a tiny sample of tissue from outside place the baby develops in 2. Testing a sample of the fluid that surrounds the baby Treatment: There are no treatments, but people with this disease can go to therapy to try to improve their language and "motor" (movement) skills Other Facts: About 10% of people with Cri du Chat syndrome inherit the chromosome from an unaffected parentThe disease is caused by the sperm cell 80% of the time
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