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.
Correct Answer:
Verified
Q1: In anaphase I,_ separate and in anaphase
Q2: Why is crossing over not possible in
Q3: Which scientist is credited with proposing in
Q4: Duplication of DNA occurs:
A)twice,before meiosis I and
Q6: The purpose of meiosis I is:
A)to separate
Q7: Genetic recombination is possible because of _
Q8: Independent assortment of homologous chromosomes occurs at:
A)prophase
Q9: How many possible orientations are there if
Q10: Which of these is not a unique
Q11: The pairing of homologous chromosomes:
A)occurs during anaphase
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