Population Genetics

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Across
  1. 4. Movement of organisms into and out of a population.
  2. 5. Is the change in the frequency of an existing gene variant (allele) in a population due to random chance.
  3. 6. A type of natural selection in which extreme values for a trait are favoured over average values and this can lead to 2 distinct groups of organisms - the extremes get bigger and the average becomes less.
  4. 10. The drastically reduction in the size of a population (and therefore the gene pool) due to events like earthquake, fire, flood, disease outbreak, etc.
  5. 11. Establishing a home in a new populations and increasing that populations variation.
  6. 12. The process by which heritable traits increase an organism's chances of survival and reproduction.
  7. 15. Is the transfer of genetic material from one population to another.
  8. 16. Any difference between cells, individual organisms, or groups of organisms of any species.
  9. 17. A type of natural selection in which a single phenotype is favoured, causing the allele frequency to shift in one direction. The graph moves towards ONE of the extremes.
  10. 18. The total number of genetic characteristics in the genetic makeup of a species
Down
  1. 1. Is a measure of the relative frequency of an allele on a genetic locus in a population.
  2. 2. Is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population.
  3. 3. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value; the average gets bigger whilst the extremes become less.
  4. 7. Each generation has more offspring than can be supported by the environment
  5. 8. When an animal leaves its home to go to another habitat. this will decrease the variation of the original population.
  6. 9. A type of continuous distribution in which most data points cluster toward the middle of the range, while the rest taper off symmetrically toward either extreme.
  7. 13. Is the change in the characteristics of a species over several generations.
  8. 14. Is the total number of genes of every individual in a population.