Based on the data in the table below, determine whether mutualism will evolve in Species 1 and Species 2. Species 1 Species 2 Fitness of successful mutualists 2 2 Fitness of unsuccessful mutualist 1 1 Fitness of nonmutualists 1 1 Proportion of successful mutualists 0.5 0.33 Proportion of unsuccessful mutualist 0.25 0.33 Proportion of nonmutualists 0.25 0.33 Species 2 will evolve a mutualism, species 1 will not evolve a mutualism Species 1 will evolve a mutualism, species 2 will not evolve a mutualism Neither species will evolve a mutualism Both species 1 and 2 will evolve mutualisms

A researcher is interested in the geographic ranges of two types of mountain ground squirrels that both use similar resources and occupy a similar amount of space on the mountain. Species A lives on the upper slopes, while species B lives a bit further down. The researcher is able to find a few areas where only one type of squirrel lives. In the location where only species A is found, populations live at approximately the same altitude as they do when both species are present. However, in locations where only species B is found, its population extends much higher on the mountain than they do when species A is also present. What can the researcher infer from this information? Species B has a larger realized niche than species A Species A has a larger fundamental niche than species B. Species A has a larger realized niche than species B. Species B has a larger fundamental niche than species A.

Population divergence occurring as a result of females in a species consistently choosing males of a particular color is an example of     ecological speciation     Haldane's Rule     genetic drift     sexual selection

Explain what this illustration is trying to convey, and why two indices (Levin’s Normalized Niche Breadth, and Feinsinger’s Proportional Similarity Index) are required

Two species have the same initial population size of 48.00, as well as rates of b = 0.83 and d = 0.66. However, species A reproduces seasonally and species B reproduces relatively continuously. How much bigger would the population of species B be after five years as compared to species A?

How does territoriality causes uniform distribution within a population? Explain in detail

As we saw last week, population size is important. Ideally, this means you started with a lot of genetically diverse founders, but of course that isn’t always the case. In the case of the Española Galapagos tortoises it was 12 females and 2 males. So, often you have to grow your population to stabilize it and ensure there isn’t an unacceptable loss of genetic diversity over time, even if that genetic diversity is low. If you think back to the math from last week and do a little not so fancy algebra, you can see that genetic deterioration occurs at a rate that is the inverse of genetic retention, which you probably remember is  1- (1/2Ne) Assume that the Española Galapagos tortoise captive population started with an Ne/N ratio of 0.7. Calculate their rate of loss of genetic diversity given their original population size of 14 tortoises (N=14). You will first need to solve for Ne, then plug Ne into the rate of loss of genetic diversity formula. Now let’s work on growing the population.…

What is the difference between microevolution and macroevolution?         Macroevolution occurs on a smaller scale with only one species. Microevolution occurs on a larger scale and includes several different species changing at once.         Microevolution occurs when there is a change within a population of a given species. Macroevolution occurs when one species changes into a completely new species.          Macroevolution occurs when there is a change within a population of a given species. Microevolution occurs when one species changes into a completely new species.         Microevolution occurs on a smaller scale with only one species. Macroevolution occurs on a larger scale and includes several different species changing at once.

You arrive on an alien planet and settle down to live there for a long time.  There are very few species.  Two of the species (A and B) are sometimes common and sometimes rare.  When you start keeping track of population changes you discover that the population sizes fluctuate on a regular cycle in close synchrony.  Species B always increases first, followed by species A. Which of the following would be the best explanation for what you are seeing? Group of answer choices -Species A is a predator and there is a time lag between changes in the density of its prey and species A's population change -Species A is a predator and it can respond instantly to changes in its prey population -Species B is a predator and there is a time lag between changes in the density of its prey and species B's population change -Species B is a predator and it can respond instantly to changes in its prey population

two species of bateria, A and B, live in the gut of fruit flies. Bacteria species A benefits by receiving food from the fly and aids the fly by helping its digestion. Bacteria species B benefits by receiving food from the fly and harms the fly by attacking cells in the lining of the gut. Which of the following statements characterizes these relationships?  a. Species A is a symbiont and mutualist, while species B is not a symbiont and is a parasite.  b. both species are both symbionts and parasites c. species A is a symbiont and species B is a parasite  d. both species are symbionts. species A is a mutualist and species B is a parasite