We consider the crash of the groundfish populations off the coast of Cape Cod as an example of ecosystem collapse due to mankind's negligence. How might this forecast our future?
What will be an ideal response?
The best responses will include discussions of the following topics: human population growth; depletion of natural resources; over fishing leading to decreased fish populations and the resulting damage to the ecosystem. Thoughtful answers will discuss the relationships that exist within ecosystems. Depleting certain populations will affect all species in the community.
You might also like to view...
A muscle contraction that results from a single action potential is known as:
A. a twitch. B. tetanus. C. isometric contraction. D. threshold potential.
A key difference between single-gene traits such as those Mendel studied and complex traits such as human height is that:
A. complex traits are generally uninfluenced by the environment, whereas single-gene traits have a significant environmental component. B. single-gene traits are generally uninfluenced by the environment, whereas complex traits have a significant environmental component. C. complex traits show incomplete dominance, whereas single-gene traits show simple dominance. D. single-gene traits show both simple and incomplete dominance, whereas complex traits show only simple dominance. E. None of these choices describe differences between single-gene and complex traits.
What is the primary determinant of virulence in Streptococcus pneumoniae?
A) the presence of a particular Lancefield antigen B) the production of pneumolysin C) the presence of a polysaccharide capsule D) the ability to lyse red blood cells E) strain-specific teichoic acids in its cell wall
Answer the following statement true (T) or false (F)
Linkage between a gene of interest and a DNA marker is being studied. A mating results in 6 parental and 3 recombinant offspring. The results of this mating are sufficient to conclude with confidence that the gene of interest and the DNA marker are linked.