Marfan syndrome is the result of inheriting a single allele. Individuals with Marfan syndrome are tall and long-limbed, and have both cardiovascular and eye defects. Marfan syndrome is an example of ________.homozygous recessivepleiotropyincomplete dominancecodominance
Question
Marfan syndrome is the result of inheriting a single allele. Individuals with Marfan syndrome are tall and long-limbed, and have both cardiovascular and eye defects. Marfan syndrome is an example of ________.homozygous recessivepleiotropyincomplete dominancecodominance
Solution
Marfan syndrome is an example of pleiotropy.
Pleiotropy refers to a single gene that influences multiple, seemingly unrelated phenotypic traits. In the case of Marfan syndrome, a mutation in a single gene can cause a range of symptoms including height, limb length, cardiovascular issues, and eye defects.
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Marfan syndrome is a dominant disorder characterized by extreme flexibility, height and weak connective tissue. However, not all of the individuals with a genotype for this condition display the phenotype. We would describe this disorder as one with ___.Group of answer choicesgenomic imprintingvariable expressivitycodominanceincomplete penetrance
Persons with Marfan syndrome have disproportionately long arms, legs, hands, and feet, a weakened aorta, and poor eyesight. All of these characteristics are due to a mutated gene (FBN1) on chromosome 15 that ordinarily specifies a functional protein called flbrillin. This is an example of _____.Group of answer choicespolygenicpleiotropycodominanceepistasismultifactorial
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