(I need all the help) If an individual is heterozygous for an autosomal trait, which allele will be expressed in the phenotype? (Assume there is NOT Incomplete or Co-Dominance.)

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?