Alleles are also like genes which contain a trait from the parent cells that could be likely passed on to the offspring cells. For example, the trait of having blue eyes of the father and brown eyes of the mother are two alleles. There are probability for these alleles to pass on. 'p' designated the success of one allele to pass on, while 'q' designates a failure. When these two are added up, the sum would be 1. Therefore:
q = 1 - p = 1 - 0.44
q = 0.56