PDF Biology mr. hoyle dna worksheet answer key answers key grade spring of the mid-term of 2009 Before beginning, print your name and student ID number (S.I.D) at the top of each page. The traits are passed from parents to offspring through genes. (2) Provide them with a normal "savage type" and several mutant phenotypes. RNA transfer b. Because the allele is in chromosome X more information B2 5 Cross