Campbell Biology: Custom Edition
Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 21.3, Problem 3CC

WHAT IF? Ø What evolutionary processes might account for prokaryotes having smaller genomes than eukaryotes?

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*00 g organisms use nformation from e is nearly identical ants, and animals. These two enzymes are found in nearly all living organisms. When you studied the cytoskeleton, you learned about the proteins actin and tubulin. Actin and tubulin are found in all eukaryotes. VAn actin gene in humans is 92% identical to the homologous actin gene in mice. An actin gene in humans is 80% identical to the homologous gene in yeast. What does this say about how long ago these organisms had a common ancestor? rom common lting from common One example of s that determine es determine which which become the Key growth of the front ons in the Hox genes sm's structure. Some nost all multicellular Hox genes must have ncestors. ection at research of the ural selection? to observe natural selection ge happens very slowly. Pa V 9.
What poses a problem to to studying the phylogenetic relationships between bacteria? O The genomes of bacteria are too small to O O study easily with phylogenetics. Lateral gene transfer makes distantly related bacteria look closely related The phylogenies are mismatched due to conjugation if only one gene is studied "Bacteria reproduce by binary fission, so inheritance and evolution are different than eukaryotes." "B,C"

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Campbell Biology: Custom Edition

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Endosymbiotic Theory; Author: Amoeba Sisters;https://www.youtube.com/watch?v=FGnS-Xk0ZqU;License: Standard Youtube License