Unit 4 - Natural Selection and Evolution

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Across
  1. 3. the spread of data points around the mean, indicating data consistency and precision
  2. 7. pool the total collection of all genes, including all different alleles, present within a reproducing population of a particular species
  3. 8. the change in the heritable characteristics of biological populations over successive generations
  4. 9. selection organisms with heritable traits better suited to their environment are more likely to survive and reproduce
  5. 12. a variant or alternative form of a specific gene
  6. 13. the rapid, global shift of populations from rural to urban areas
  7. 16. a heritable, functional trait—anatomical,, physiological, or behavioral—that evolves through natural selection, enhancing an organism's survival and reproduction in its environment
  8. 17. adaption a physical, inherited structural feature of an organism—internal or external—that has evolved through natural selection to enhance survival and reproduction in its environment
  9. 18. comprehensive explanation of natural phenomena, supported by extensive evidence, observation, and repeated experimentation
  10. 19. ways a channel built to take the floodwaters of a river.
  11. 20. the capacity of a system—such as populations and ecosystems—to withstand disturbances, maintain core functions, and recover or adapt following environmental stress or damage
Down
  1. 1. adaptation an internal change that animals and plants go through to ensure their survival in their environment
  2. 2. (of a seed or spore) begin to grow and put out shoots after a period of dormancy
  3. 4. environments heavily altered by high-density human habitation, characterized by infrastructure (roads, buildings), impervious surfaces, and high pollution levels
  4. 5. adaptation specific actions or learned behaviors organisms perform to survive, reproduce, and thrive in their environment
  5. 6. Patches of soil interrupted by buildings or sidewalks
  6. 10. pressure refers to external factors—such as environmental conditions, disease, or predators—that influence the survival and reproduction of individuals, driving natural selection
  7. 11. deviations
  8. 14. frequency the proportion of a specific allele (gene variant) among all copies of that gene within a population's gene pool, expressed as a decimal or percentage.
  9. 15. The variety of all living organisms on Earth, encompassing the variability within species, between species, and across ecosystems
  10. 18. a specific, observable characteristic or feature of an organism