Pls help need this for a class

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements? a. carbon remains carbon b. nitrogen c. oxygen d. hydrogen

Aheterozygous normal male marries a woman with a sickle cell anemia. give the genotypes and possible phenotypes of the offspring