Evolution & Natural Selection

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Across
  1. 2. random changes in alleles or genes
  2. 3. disappearance of particular genes or alleles from a population by chance, not by natural selection
  3. 4. model for studying how allele frequencies are changing in a population; states that allele frequency will remain constant in a population if no evolutionary forces are acting upon it
  4. 6. environmental event wipes out a large number of individuals, resulting in a significant loss of genetic variation
Down
  1. 1. a small new population is established by a few individuals from a larger population; ________ Effect
  2. 5. changes in allele frequencies in a population over time