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23 Nov 2019

1. Describe the 3 domain system of classification – make sure that you explain what criteria were used to divide organisms into these 3 domains. (3-4 sentences).

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5 Apr 2019
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Related questions

1. What are protein domains?
2. Why are the same protein domains found in many different species?
3. How does a multiple sequence alignment allow you to identify domains?
4. If two proteins share a domain, does that make them homologs? Why or why not?

Thinking about the Domains of Living Things- What type of organisms do you think you’ve found? What criteria have you used to decide this? (You could begin with- Do I think I see prokaryotes or eukaryotes? Then try to determine a more specific identity based on, for example: visible features, size, internal compartments, color or colored features, mobility, etc.) What Kingdom(s) might these living things belong to you?

(Short answer: 3 points each) The following are examples of classification schemes that are used in bacteria. Which schemes provide useful information about the phylogeny of the organisms that fall into these categories? For each category you must say why, or why not.

(A) Photosynthetic

(B) Archaea

(C) Pathogenic

(D) Gram negative

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