Which of these germinal layers give rise to the digestive system, the circulatory system, and the nervous system?

What is a codon and where is it found

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.

What is used as a template during replication? a- mrnab- trnac- rrnad- dnagiving branliest (or however you spell it) (15 points + 8)