Question

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1. Find the graph paper in your kit and graph your results by putting the generation number along the x-axis and the number of bears along the y-axis. When drawing the lines, use a different color to represent each type of bear. (Make sure to indicate which color goes with which type of bear.)

2. Summarize the trends you see in each population from each generation.

a. Dark bears-

b. Light bears-

3. Explain how this experiment demonstrated natural selection.​

Answer 1

The student is to graph simulated population data, analyze trends, and understand natural selection by representing different bear populations as colored beads and observing changes over generations after a simulated disaster.

Step-by-step explanation:

The question involves performing a simulated experiment to observe the changes in populations, graph the results, and analyze the trends to understand the concept of natural selection. Students are asked to use graph paper to plot the generation number on the x-axis and the number of bears, represented by different colored beads, on the y-axis, using different colors for each type of bear. After graphing the data, students are expected to summarize the trends they notice in the populations of the different bears from each generation, using the graph they have created.

To demonstrate natural selection, the experiment simulates a natural disaster affecting the population, and the subsequent change in the genetic makeup is recorded after several generations. This allows the student to observe the principle of natural selection acting on phenotypic variations in populations, as some bear types may be more likely to survive the simulated natural disaster than others. The collected data will then be used to predict future changes in the population.

The experiment aims to deepen the student's understanding of key biological concepts by analyzing the simulated data. The student will apply mathematical methods, such as constructing histograms or line graphs, to represent the data and make predictions about the population's future based on genetic variations caused by the simulated events.

Answer 2

THIS PROBABLY ISNT 100% ACCURATE, AND BE SURE TO CHANGE UP SOME OF THE ANSWERS

1. Find the graph paper in your kit and graph your results by putting the generation number along the x-axis and the number of bears along the y-axis. When drawing the lines, use a different color to represent each type of bear. (Make sure to indicate which

color goes with which type of bear.)

Okay, this is REALLY simple. Just make a graph with the info given to you.

2. Summarize the trends you see in each population from each generation.

a. Dark bears— Dark Bears with their arms up always had double to amount of the Dark bears with their arms down, and past Generation 3 the Dark Bears had more numbers than the Light Bears

b. Light bears— Light Bears start off with only arms down, and when arms up bears are introduced, they are more common/prevalent for the majority of the generations, having usually twice as much as the bears with the arms down.

3. Explain how this experiment demonstrated natural selection.

This experiment shows natural selection by hosting events in which certain bears are put more at a risk than other bears, such as environment changes favoring dark bears, or bears with their arms up.

4. If the environmental situation changes, is it possible for a population to be restored?

Via adaptations, it is completely possible for a bears population to thrive again, but perhaps not with the same characteristics.

5. How can natural selection help explain how a population becomes extinct?

As the environment changes, it may favor a species less and less, which leads to their decline, if they are unable to change with the times and adapt, the species will go extinct as it is no longer fit in its environment.

6. Which generations saw a population altering incident? Use your imagination to invent a possible environmental incident that could have caused this shift in populations.

The Light Bears faced a decline, and most bears with their Arms Down faced a decline too. Light bears could be explained via environmental factors, such as their original habitat being snowy, and without the snow they're more visible given their lighter colors. Arms down could simply be a dominants v recessive trait

7. How can environment impact a particular population of a species?

If a certain species is not fit for the changes made in an environment, it could result in either their extinction, or a mutations/adaptations so that the species can continue to thrive.

8. What are some natural reasons that animals in a population might die?

Competition, not enough resources, environmental changes.

9. What are some man-made reasons that animals in a population might die?

Things such as deforestation, overhunting, and introducing invasive nonnative species.

10. What are some ways that man has helped animals maintain their populations?

Protecting endangered species, rehabilitating injured animals, making animal reservations, etc.

Step-by-step explanation: