Evolution and Natural Selection

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Across
  1. 3. The reduction in genomic variability that occurs when a small group of individuals becomes separated from a larger population
  2. 5. The theory of the evolution of species by natural selection advanced by Charles Darwin.
  3. 6. Organism adapts to its environment through selectively reproducing changes in its genotype
  4. 8. The change in frequency of an existing gene variant in the population due to random chance
  5. 12. The diversity in a particular characteristic among individuals within a population
  6. 13. The production of new organisms by the combination of genetic information of two individuals of different sexes
  7. 14. The dying out of a species
  8. 17. The natural process by which organisms best adjusted to their environment are most successful in surviving and reproducing
  9. 18. The process by which individuals compete for access to mates and fertilization opportunities
  10. 19. The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
  11. 20. A mode of reproduction in which a new offspring is produced by a single parent
Down
  1. 1. The biological mechanism by which organisms adjust to new environments or to changes in their current environment
  2. 2. These evolve as gene frequencies change
  3. 4. The process by which humans choose individual organisms with certain phenotypic trait values for breeding
  4. 7. How a new kind of plant or animal species is created
  5. 9. Any movement of individuals, and/or the genetic material they carry, from one population to another
  6. 10. Small single-celled organisms
  7. 11. Provides important evidence for evolution and the adaptation of plants and animals to their environments throughout time
  8. 15. A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
  9. 16. The progressive changes in size, shape, and function during the life of an organism by which its genetic potentials (genotype) are translated into functioning mature systems (phenotype)