Evolution

Can you please clearly explain the following: I know that in evolutionary terms "success" can be defined in many different ways. What are they most successful organisms you can think of in terms of (a) persistence over time (b) sheer numbers of individuals alive now (c) numbers of species and (d) geographical range Thank you!

miscellaneous questions

1. A population of grasshoppers in the Kansas prairie has two color phenotypes, green and brown. Typically, the prairie received adequate water to maintain healthy, green grass. Assume a bird that eats grasshoppers moves into the prairie. How will this affect natural selection of the grasshoppers? How might this change in a drought year? 2. Describe a scenario involving coevolution of a predator and prey. What might you expect when the two species initially co-occur? What might you expect after 20 generations? 3. Describe some characteristics of mutations. 4. Describe how the mitochondrion evolved as an organelle according to the endosymbiont hypot... click for more

Evolutionary success for organisms in terms of period of survival, adaptaion to environmental niches and total numbers of both individuals and species.

Evolution -------------------------------------------------------------------------------- Can you please clearly explain the following: I know that in evolutionary terms "success" can be defined in many different ways. What are they most successful organisms you can think of in terms of (a) persistence over time (b) sheer numbers of individuals alive now (c) numbers of species and (d) geographical range

Ecosystems etc.

1. Name at least 5 factors that could be considered environmental resistance. 2. Describe the ecological niche of an organism. 3. Which ecosystems are more productive, tropical rain forests or northern coniferous forests and why? 4. Why is acid rain more of a problem in certain areas, such as New England than in others?

Use this dichotomous key to help determine the taxonomic category

In the animal kingdom, you can place animals in categories based on certain differences in the characteristics that each possesses. If you know what critical traits to look for, it is possible to separate any animal into its proper taxonomic category. Use this dichotomous key (attached) to help determine the taxonomic category to which a specific organism belongs.