Evolution

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Across
  1. 1. selection-Stabilizing selection is a type of natural selection in which the population mean stabilizes on a particular non-extreme trait value.
  2. 2. selection -In population genetics, directional selection, or positive selection is a mode of natural selection in which an extreme phenotype is favored over other phenotype, causing the allele frequency to shift over time in the direction of that phenotype.
  3. 5. isolation - is reproductive isolation based on the behavior of species in the context of mating rituals and signals.
  4. 9. structures- In biology and related fields such as anatomy and anthropology, these structures are exemplified by body parts that have the same anatomical composition or structural features.
  5. 10. flow- the introduction of genetic material (by interbreeding) from one population of a species to another, thereby changing the composition of the gene pool of the receiving population.
  6. 11. isolation-In computer science, temporal isolation is the capability of a set of processes running on the same system to run without interferences concerning their temporal constraints among each other.
  7. 12. - A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
  8. 14. isolation -The mechanisms of reproductive isolation are a collection of evolutionary mechanisms, behaviors and physiological processes critical for speciation.
Down
  1. 1. - how a new kind of plant or animal species is created.
  2. 3. structures - biology, similarity of function and superficial resemblance of structures that have different origins.
  3. 4. structures -1 of a body part or organ : remaining in a form that is small or imperfectly developed and not able to function.
  4. 6. selection -Disruptive selection, also called diversifying selection, describes changes in population genetics in which extreme values for a trait are favored over intermediate values.
  5. 7. selection - the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
  6. 8. isolation -The separation of two populations of the same species or breeding group by a physical barrier, such as a mountain or body of water.
  7. 13. drift -variation in the relative frequency of different phenotype in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.