Gene Therapy - How DNA play a role in inheritance At...

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How DNA play a role in inheritanceAt conception, the embryo receives 23 chromosomes from the mother's egg and23 chromosomes from the fathers sperm. These pair make up to a total of 46chromosomes. Pair 1 of 22 ore identical or nearly identical; the 23 pair consistof the sex chromosomes, which are either X or Y. Each egg and sperm contain adifferent combination of genes between each other before the cells divided. Thismeans that, with exception to twins each person has unique characteristic.(2008 Excerpted from Pregnancy day) The role ole genes and inheritanceGive an example of a dominant and recessive genedisorderMarfan's syndrome is a dominant gene disorder characterized by long thinarms, legs, and fingers. People with Marfan's syndrome tend to be stoop-shouldered and have bluish eyeballs. Plus they have high incidence of eye andheart problems. Abraham Lincoln is believed to have had Marfan's Syndrome.Sickles cell anemia is a recessive genetic disorder usually high in the black andHispanic population but some cases occur in Italian, Greek, Arabian, Maltese,Southern Asia and in Turkish people. 1 in 12 black people carry the genedisorder. Sickle cell is caused by mutation in the gene responsible for theproduction of hemoglobin, which is the compound that carries oxygen in the redblood cells to tissue and organs throughout the body.

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Term
Fall
Professor
Sharon Marusiak
Tags
Genetics, Marfan s syndrome

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