Week 21 - short film

Question 1

Learning Objectives:

Specify why predators are the selection pressure on mouse fur colour in Arizona’s deserts.

Using the rock pocket mice as an example, describe how changes in the environment can alter which traits are selected for, or selected against.

Explain how variation, selection, and time fuel the process of evolution through natural selection.

Question 2

Specify why predators are the selection pressure on mouse fur colour in Arizona’s deserts.

Answer 2

because the Rock Pocket Mouses that don’t have fur colour that blend in with the environment will get eaten by predators since then can’t blend in

Question 3

Using the rock pocket mice as an example, describe how changes in the environment can alter which traits are selected for, or selected against.

Answer 3

environmental changes can exert selective pressures on a population, leading to the adaptation of specific traits that enhance survival and reproduction in the new environmental conditions. The rock pocket mice’s fur coloration serves as a visible and tangible demonstration of natural selection in response to changes in their habitat.

Question 4

Explain how variation, selection, and time fuel the process of evolution through natural selection.

Answer 4

In summary, the process of evolution through natural selection involves the perpetuation and spread of advantageous genetic variations within a population over time.

Variation provides the raw material for natural selection to act upon, and the cumulative effects of selection and time lead to the adaptation and diversification of life forms.

The process is dynamic, occurring in response to changing environmental conditions and selective pressures.