Do all mutations affect the protein? (In other words, do all mutations change the amino acid sequence?) Explain your answer.

In which situations is the principle of cross-cutting relationship useful in determining relative age?

A(n) is a molecule influences the way that a molecule reacts.

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.