PATHOLOGY MCQ
GENETICS AND DISEASE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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recessive alleles
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2 dominant alleles
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one dominant allele
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sex-linked heredity
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Detailed explanation-1: -Examples of autosomal recessive disorders include cystic fibrosis, sickle cell anemia, and Tay Sachs disease.
Detailed explanation-2: -Cystic fibrosis is the most common, lethal, inherited disease in white populations. Approximately 1 in 2500 newborns in the United States is born with the disease. It typically displays autosomal recessive inheritance requiring each parent to provide a pathogenic allele to their child for the disease to manifest.
Detailed explanation-3: -Autosomal recessive inheritance is a way a genetic trait or condition can be passed down from parent to child. A genetic condition can occur when the child inherits one copy of a mutated (changed) gene from each parent. The parents of a child with an autosomal recessive condition usually do not have the condition.