Marroned in Galapagos

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Across
  1. 3. The visible form of an allele, ei., blue or brown eyes
  2. 5. Change in allele frequencies when individuals from a large population settle in a new environment
  3. 7. This mechanism of evolution occurs in small populations in which an allele can be fixed in a population by chance. Natural Selection has no effect in this process
  4. 10. All the organisms sharing similar genotype or similar alleles
  5. 11. An alternative form of a gene
  6. 12. Survival of the fittest
Down
  1. 1. A change in the structure of a gene that can increase fitness in the carrier of this change. Natural Selection acts if the mutation is good
  2. 2. This is what Natural Selection needs to work, without this component, Natural Selection doesn't exist
  3. 4. Evolution has no intends or direction or end to perfection
  4. 6. The genetic make up of an allele, the genes in the chain of the DNA determining a phenotype
  5. 8. Change in allele frequencies in a population
  6. 9. A measure of an individual's ability to survive and reproduce