Question

marfan syndrome in humans is caused by an abnormality of the connective tissue protein fibrillin. patients are usually very tall and thin, with long spindly fingers, curvature of the spine, sometimes weakened arterial walls, and sometimes eye problems, such as lens dislocation. which of the following would you conclude about marfan syndrome from this information? it is pleiotropic. it is epistatic. it is recessive. it is dominant.

Explanation:

Pleiotropy is when a single gene has multiple phenotypic effects. Here, one gene (related to fibrillin) causes multiple symptoms (tall/thin body, long fingers, spine curvature, arterial wall issues, eye problems). Epistasis is about gene - gene interaction affecting a trait. There's no info about allele dominance (recessive/dominant) in the given symptoms description.

Answer:

It is pleiotropic.