Is there a common evolutionary pathway between host and parasite?

what is alternation of generations and could it be a good evolutionary strategy for some organisms

Many species of hover flies have black and yellow coloration that closely resemble the coloration of bees and wasps. However, as opposed to bees and wasps, hover flies are harmless and do not sting. Hover flies are probable case of parasitism   resource partitioning   host manipulation   homologies   batesian mimicry     Previous PageNext Page

A group of environmentalists is studying the effects of recent commercial zoning to wildlife acreage on the biodiversity of a rural county. The group noted a steady decline in the population of animals, while bacteria and other protists remained constant. Which statement best discusses the reasons for the steady decline of animals as opposed to the protists? A. Bacterial growth is usually not affected by environmental changes because of asexual reproduction. B. The animals could not adapt to the new environment. C. Bacteria lived in areas that were not affected by the zoning D. The animals became susceptible to human and environmental harm.

What is the Red Queen Dynamic?  Using the snail example, explain why different parasite and host genotypes are expected to oscillate in frequency?  Why would this favor sexual reproduction or outcrossing?

What is the relationship between the sickle cell mutation and the Plasmodium parasite? Would having the HbSA genotype still be advantageous in a region where such parasites are not common? Why or why not?

In the figure, if a plant and human mitochondrial genome contain the same gene (homolog), did they likely inherit the gene from a common ancestor?

Normal mitosis takes place in a diploid cell of genotypeA/a ; B/b. Which of the following genotypes might represent possible daughter cells?a. A ; B b. a ; b c. A ; bd. a ; B e. A/A ; B/B f. A/a ; B/bg. a/a ; b/b

Does endosymbiosis provide evidence for evolution?

How to ensure that organisms will reproduce so they can evolve?