The cells have different size as per their diameter and volume ratio. “ Cell surface to volume ratio” is important to maintain the cell functions. A small sized cell have high surface area ratio. A high surface to volume ratio is good for the exchange of materials between the cell and its environment. Larger organism has more number of cells instead of large cells to facilitate the better exchange of materials.

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6. The mammalian phylogenies (labeled a and b) were produced by two different research groups. a. In which tree do phylogenetic relationships most closely align with biogeography and why? (consult the Teeling and Hedges paper) b. What are the most closely related species to Chiroptera in each tree? Might the use of convergent traits for building phylogenies explain this difference? If so, which tree is most likely to have relied on convergent traits and why? c. What are some possible reasons that the two research groups came up with different phylogenies (in general terms)? describe at least three possible reasons.

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Chapter 4, Problem 3TYK

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Introduction: The cells have different size as per their diameter and volume ratio.“Cell surface to volume ratio” is important to maintain the cell functions. A small sized cell have high surface area ratio. A high surface to volume ratio is good for the exchange of materials between the cell and its environment. Larger organism has more number of cells instead of large cells to facilitate the better exchange of materials.

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