Chromosome 21 has 200 to 250 genes approximately. According to the number of genes involved, chromosome 21 is the smallest chromosome. Researchers believe that even the smallest change in this gene can affect an individual and gives the syndrome of Down syndrome. Some of the genes involved in Down syndrome are; superoxide dismutase, COL6A1, ETS2, CAF1A, cyctathione beta synthase, DYRK, CRYA1, GART, IFNAR, APP, GLUR5, S100B, TAM, and PFKL. The overexpression of these genes may result in Down syndrome (Leshin, 2003). For example: the gene called DYRK1A is responsible for brain growth. The insufficienc...
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...hat is 46 instead of 47. This article will help me to write my last body paragraph because this article contains information regarding a method that can prevent Down syndrome. This method hasn’t been approved yet; scientists believe that it may help cure Down syndrome.
Individuals with Down syndrome have 47 chromosomes instead. Down syndrome is the most common chromosomal abnormality and majority of individuals with Down syndrome is caused by trisomy 21. Many genes in chromosome 21 including DYRK, COL6A1 are responsible for syndromes in Down syndrome. A study has shown that as maternal age increases the chances of child with Down syndrome increases. Individuals with Down syndrome are affected with intellectual disability and many chronic health issues but early interventions programs such as genetic counseling have helped them live a productive and healthy lifestyle
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- Down syndrome was discovered in the 1800’s by a man named John Langton Down. Down syndrome1 is a condition that occurs in the chromosomes. The syndrome affects the intellectual ability of the person effected, their facial appearance and causes hypotonia2. Children born with this usually experience different types of birth defects. These birth defects can include heart defects and intestine blockage. People with Down syndrome are also at a high risk of developing other medical conditions. Some medical conditions include gastro esophageal reflux3, celiac disease4, hypothyroidism5, and leukemia6.... [tags: Down syndrome, Chromosome, Cancer]
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