[Solved] In their experiments to identify the transforming principle, Avery, MacLeod, and McCarty used enzymes that break down ____. A) protein, DNA, and RNA B) protein and RNA only C) DNA only D) protein, lipids, and RNA E) lipids and DNA only Bar Eye: A genetic mutation in fruit flies that leads to an elongated eye shape, often used in genetics studies. Heterozygous: Referring to an individual having two different alleles for a particular gene, one inherited from each parent. Nondisjunction: An error in cell division that results in offspring with an abnormal number of chromosomes. XXX Female: Typically refers to an individual with a rare genetic condition featuring an extra X chromosome, resulting in a 47,XXX karyotype.