Dec. 4, 2017
Formal Lab Report
I. Purpose / Objectives
The purpose of this lab was to imitate natural selection in a controlled environment.
Hypothesis 1 – Size Null: There will be no difference in which of the beans will be picked first, based on size.
Alternative: The smaller beans will be more likely to be picked last, therefore, they will survive and reproduce.
Hypothesis 2 – Color
Null: There will be no difference in which of the beans will be picked first, based on color.
Alternative: The darker beans will be more likely to be picked last, therefore, they will survive and reproduce.
The lab was performed by three participants. One was chosen to pose as the predator. …show more content…
The textbook, Biology: Life on Earth with Physiology defines natural selection as “unequal survival and reproduction of organisms due to heritable differences in their phenotypes, with the result that better adapted phenotypes become more common in the population” (Audesirk, 2017). Our “predator” simulates nature’s meat-eating predators that catches and eats smaller species. The beans represent the prey, usually plant eaters; the variety of beans used imitates ten kinds of prey of differing sizes and colors. The dark grey mulch takes the place of a dark …show more content…
Smaller sized prey would be able to find hiding spots, and would be more likely to survive and reproduce. The result would be that genes associated with small size would become more common in future generations. An example of this is an owl hunting for field mice. The large field mice would have a difficult time finding a hiding place; however, the small sized field mice could hide almost anywhere. The result would be that smaller field mice would “become more common in the population” (Audesirk,