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Stabilizing selection is the most common form of natural selection. It eliminates any extreme expression of a trait in a population
of organisms when the average expression leads to a higher rate of survival. Stabilizing selection tends to

What is the term for the two sets of chromatids formed in the parent cell a. haploid b. diploid c. gamete d. tetrad

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.

This is a biological reaction due to a stimulus. i need this quickly !