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Problem Set 3 Quiz

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Bios101
Problem Set Three

1. (two points) A researcher is excavating a fossil bed from a Devonian reef, now fossilized in Pennsylvania. She encounters many species that are new to science. a) Which species concept would be most expedient and effective, in the process of collecting, naming, and describing what she finds?
Phylogenetic species concept would be the most expedient and effective process of collecting, naming, and describing what she found. Phylogenetic relies on common ancestry and shared evolutionary when defining a species.
b) Go online and research. Give at least three examples of actual species that were present in the Devonian period. What is the point, if there IS any point, to naming and describing species that went …show more content…

Why this business of collecting sperm from males she never met? Std error is shorthand for standard error of the mean, in this case, mean survivorship of the ten groups of eggs fertilized by males in the same category. Why did the researcher list it? Would the data be as credible without it?
The female was not allowed to choose whatever male she wanted because the category for each won’t be completed for the second part of the experiment. The researcher listed the Std error because she wanted to ensure that the data was correct. She wanted us reader to know what the mean survivorship of the ten groups of eggs that was fertilized by males in the same category.
c) Go online and research. Explain the good genes hypothesis. What is ich? Describe its life history.
The good genes hypothesis is the traits where females choose when selecting a mate that have honest indicators whether the male’s ability to pass on genes that will increase the survival or reproductive success of her offspring. Ich is a type of an aquatic parasite that quickly attach themselves on the outer layer of a fish’s skin once they are born. Its life history is that they will feed off it’s host until it dies or when they are big enough to detach itself and reproduce.
5. (two points) Go to the following link and read the paper.

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