If an individual allele has more than one effect on the phenotype it is said to be Naim 21:24 Heredity Meiosis Molecular Genetics If an individual allele has more than one effect on the phenotype it is said to be a. pleiotropic. b. epistatic. c. recessive. d. dominant. e. homozygotic. Answer: A Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+