HELP PLEASE PLEASE PLEASE If a major portion of a population leaves for a new territory, what happens to the gene pool of the original population?
It stays the same, no alleles are lost.
It will always increase due to mutations,
It is decreased; alleles are lost.
Both populations will always become new species.

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.