Lab: Natural Selection Exam Guide 2024.

Lab: Natural Selection Exam Guide 2024. In this lab, the three flocks of birds changed in numbers between generation 1 and generation 3. Why? Check all reasons. - ANSWER If a flock's beak type made it easier to pick up the available food, the flock grew. If a flock's beak type made it harder to pick up the available food, the flock shrunk. How does nature "select" phenotypes, such as bird beaks? Check all correct explanations. - ANSWER Traits that suit the environment enable an organism to reproduce in greater numbers. Traits that do not suit an environment make it harder for an organism to stay alive and reproduce. The data of this lab _____ the hypothesis because there was a difference in bird beak distribution _____. - ANSWER supported; when fruit was removed Which possible outcome below would not have supported the hypothesis? - ANSWER if generation 3 had flock distributions similar to those shown in the graph below Darwin studied actual birds on the Galapagos Islands instead of using a simulation, as you did in this lab. Studying natural selection in the field can be challenging. List at least three possible challenges Darwin might have faced. - ANSWER Traits other than beak type might affect natural selection.