Which of the following is caused by a dominant allele?
a. colorblindness
b. cystic fibrosis
c. huntington's disease
d. sickle cell disease

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a