Biology

Pleiotropy occurs when one gene influences multiple phenotypic traits. An example is the Marfan syndrome gene, which affects connective tissue and can cause multiple symptoms, including tall stature, long limbs, and heart problems. If an individual with Marfan syndrome (genotype Mm) mates with an individual without Marfan syndrome (genotype mm), what is the expected probability that their offspring will have Marfan syndrome?