How do scientists produce new genetic variations not found in nature? by a transforming rna b using gel electrophoresis. c using lasers to cut and paste dna. d causing mutations with chemicals or radiation?

Which enzymes break down carbohydrates?

Dna replication or repair occurs in a cell in all of thw following situations except when

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.