Which of the following mechanisms of change in genefrequencies is responsible for the antibiotic resistance of E. coli in this experiment? A. founder effect

B. natural selection

C. population bottleneck

D. genetic drift

What are some things that limit population growth?

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.

How can an organ, such as the lungs, work for multiple body systems?