(Solved): identify the gentic factor at play and why a. A woman with severe neurofibromatosis type 1 has brown ...

a. A woman with severe neurofibromatosis type 1 has brown spots on her skin and several large tumors beneath her skin. A genetic test shows that her son has the disease-causing autosomal dominant allele, but he has no symptoms. b. A man would have a widow's peak, if he wasn't bald. c. A man and woman have six children. They also had two stillbirths-fetuses that stopped developing shortly before birth.