The skin of a homozygous ocean slug is purple (PP). The ocean slug mates with an ocean slug whose skin is white due to homozygous alleles (pp). The slugs' offspring (Pp) display a light purple skin because of ___.

What mistake did john needham make that caused him to conclude that spontaneous generation for microorganisms occurred? a. he re-contaminated his boiled broth solutions. b. he destroyed the vital force in the solutions. c. he did not boil his broth solutions, only warmed them. d. he failed to seal his flasks of boiled broth. e. he allowed his assistant to conduct the experiment which he did not monitor closely.