PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The genetic mutation was present in all populations but did not get passed on in places where humans did not contract the disease.
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This genetic mutation codes for the production of a protein that provides resistance to the disease.
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The disease causes the genetic material of humans to mutate just before it causes their disease.
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Humans with this mutation develop this disease and then spread it to other humans without the mutation.
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Detailed explanation-1: -Some of the more common single-gene disorders include cystic fibrosis, hemochromatosis, Tay-Sachs, and sickle cell anemia. Even though these diseases are primarily caused by a single gene, several different mutations can result in the same disease but with varying degrees of severity and phenotype.
Detailed explanation-2: -Environmental exposures such as tobacco smoke, UV light, and aristolochic acid can result in increased mutation rates in cancer genomes. Mutation rates across individuals are also impacted by variability in the activity of certain cellular processes.
Detailed explanation-3: -Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Detailed explanation-4: -Which of the following would be the most immediate result of a gene mutation in an organism? A change in a protein produced by the organism.