Lab: Natural Selection Answers

Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop-down menus to complete the statements. In this experiment, the was intentionally manipulated. This was the independent variable. The dependent variable measured was the .

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The graph shows the number of beans eaten by a random zocco. How many light red kidney beans were eaten on Day 7? How many dark red kidney beans were eaten on Day 8?

The graph shows the number of beans eaten by a zocco. On which day were the most light red kidney beans eaten? Day On which day were the fewest dark red kidney beans eaten? Day

This is a graph of the mean, or average, number of beans eaten for every three days. During Days 1–3, more red kidney beans were eaten. During Days 4–6, more red kidney beans were eaten. During Days 7–9, more red kidney beans were eaten.

Complete the sentences to identify the conditions that are necessary for natural selection. The environment needs to change. In this lab, the of the light was the change to the environment. Populations must have some variation. In the bean population, the color of the beans varies. Organisms must have a specific in order to survive and reproduce. During the period of red light pollution, the majority of the survivors were light red.

At the beginning of Day 1, there were one hundred of each color bean. Twenty of the dark red beans and thirty-five of the light red beans were eaten. What effect will this have on the population of the beans? Check all that apply.There will be more dark red kidney bean survivors.There will be fewer light red kidney bean survivors.There will be more light red kidney bean offspring the next morning.There will be more dark red kidney bean offspring the next morning.There will be an even number of light red and dark red kidney bean offspring produced that night.