Evolutionary Significance of Variation – Crossword 5

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Across
  1. 2. Formation of new species due to accumulated variation
  2. 5. Process by which favourable traits increase in frequency
  3. 7. Prevention of gene flow between populations
Down
  1. 1. Increasing differences between populations of the same species
  2. 3. Reproductive success of an organism in a population
  3. 4. Movement of genes between populations
  4. 6. Advantage that allows organisms to persist in an environment