when an organism may have a genetic mutation that my cause an abnormality. Sometimes the abnormality may prove to actually be an advantage. The mutation‚ for example‚ could be the fact that a snake in a jungle was once black and with a genetic skin mutation‚ a few snakes happened to have a green skin color. Since they had the green skin color‚ they camouflaged with their surroundings more‚ and that allowed for longer lifespans. After the snakes with the mutation reproduced and produced offspring with
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"gēras"‚ meaning "old age". The disorder has a very low incidence rate‚ occurring in an estimated 1 per 8 million live births. Those born with progeria typically live to their mid teens to early twenties. It is a genetic condition that occurs as a new mutation‚ and is rarely inherited‚ as carriers usually do not live to reproduce. Although the term progeria applies strictly speaking to all diseases characterized by premature aging symptoms‚ and is often used as such‚ it is often applied specifically in
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This disease’s mode of inheritance is X-Linked‚ which means that the gene causing the trait or disorder is located on the X chromosome. Overall‚ it is caused by a mutation in the GPR143 gene on chromosome Xp22.2. In comparison to oculocutaneous albinism‚ it is much less common with the prevalence being 1 in 60‚000 people‚ which was determined in a study conducted from 1960 until 1989. Some clinical features include
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The body is combined of more than millions of cells. Cancer starts from defects or mutation in DNA of one cell or a slight number of cells. Mutations can happen by chance when a cell is dividing‚ or by chemicals from outside of the body such as skin lotion or ultraviolet. In addition‚ skin cancer is the uncontrolled growth of abnormal skin cell which has many stages‚ and it may spread to other organs. As skin cancer cells grow‚ they can group together to form a tumor. It may take months or
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Hutchinson-Gilberg Progeria Syndrome‚ commonly known as Progeria‚ is a genetic mutation‚ or not passed down to children by the parents‚ that affects only about 80 children on the entire Earth. This particular disease is the rarest ever to be found because of its specific effect on the genes of an embryo. Also‚ the word “progeria” was formed for the Greek language to mean‚ “prematurely old”‚ because when a child develops it‚ it will form physical features that resemble a person who is close to death
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Introduction: Sickle-cell anaemia (SCA) also called Sickle-cell disease (SCD)‚ is a genetic blood disorder. It occurs due to a mutation in the haemoglobin gene. In sickle-cell anaemia‚ red blood cells become rigid‚ less flexible and adopt sickle shape. Sickle-cell disease occurs more commonly among people whose ancestors lived in tropical and sub-tropical sub-saharan regions. In Sickle cell disease‚ human blood contains both normal red blood cells and sickle-shaped cells. Sickle-cell disease causes
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with dwarfism. Dwarfism occurs in all ethnic group. Any two average size parents can have a child with dwarfism. Most causes are genetic‚ resulting from a spontaneous mutation‚ or can be inherited from the parents. In a mutation a single normal gene in a chromosome suddenly mutates‚ which results in the specific condition. The mutations occur during pregnancy‚ and is the most common reason that two parents of average size can have a child with dwarfism. When dwarfism is inherited both parents have a
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because harmful traits wouldn’t allow organism to survive‚ so it is surprising to learn that “a genetic mutation that creates one disease can also protect against another disease”. This just showed how natural selection is adapting‚ as this connection is unique to the human race. The biological process of sickle cell anemia provides foundation for why it can protect against malaria. The genetic mutation that results in sickle cell anemia causes the red blood cells to misshapen. This blood abnormality
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Learning disabilities occur in about one-third of those diagnosed with DMD. It is caused by a mutation in the DNA that codes for dystrophin. This is a protein that helps
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recessive genes from each parent‚ they will inherit this disease. If they inherit one recessive gene from only one parent and not the other one‚ they will become a carrier and might not have any symptoms of this disease. This disease is a result of mutations of the SLC39A4 gene that codes for transport protein ZIP4 which is responsible for the uptake of zinc in the intestine cells of infants. This disease will often show up when the infants are weaned off their mother’s breast‚ it is believed that somehow
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