What Is the Basis of Herman Muller's Ratchet Theory

question 32

Multiple Choice

What is the basis of Herman Muller's Ratchet theory?

• A)That meiosis reduces the chromosome number in half.
• B)That synapsis must occur for crossing over to take place.
• C)That parthenogenesis does not increase genetic variability.
• D)That evolution is due to mutations,not crossing over.
• E)That once harmful mutations arise,asexual populations have no way of eliminating them.

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