Answer:
B
Step-by-step explanation:
A cell contains a set amount of chromosomes, in order for a offspring of two parents to have a genetic difference in their dna, like it normally does, two sexual cells must be involved in the process, theese cells having half of the set chromosomes (process achieved by meiosis), adding up to the species set number by the procces of combining, this making it so that the offspring has half the dna of each parent, then the dominant traits will be the ones shown in the phenotype of the offspring