Which of the following would, if it had acted upon a gene, prevent this gene from acting as a reliable molecular clock?

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#Question id: 12029

#7. System Physiology – Animal

When used appropriately, antibiotic treatment can effectively reduce bacteria populations and help fight infections. However, antibiotic treatments can have unintended effects. What is one concern when using antibiotics?

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#Question id: 410

#1. Molecules and their Interaction Relevant to Biology

For the reaction A -> B, the Keq' is 10^4.  If a reaction mixture originally contains 1 mmol of A and no B, which one of the following must be true?

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#Question id: 2065

#2. Cellular Organization

Which of the following are least likely to diffuse through the phospholipid bilayer of a cell membrane?

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#Question id: 18224

#11. Evolution and Behavior

Proterozoic era characterized by___

a) Origin of life

b) Fossils of blue green algae

c) Most invertebrate evolved

d) First gymnosperm

e) Abundance of marine algae

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#Question id: 12108

#10. Ecological Principles

Resource partitioning would be most likely to occur between