A white blood cell has a different structure and function compared to a red blood cell. What does a white blood cell do to genes it does not need?

It represses the transcription of unnecessary genes.

It transports unnecessary genes out of the cell.

It cuts out unnecessary genes from the cell's chromosomes.

It destroys unnecessary genes.

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.