1) one of mendel's laws of inheritance. this law states an organism has two different alleles for a trait and the allele that is expressed in the phenotype, masking the expression of the other allele, is said to be dominant. the allele whose expression is masked is said to be recessive.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

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