evolution

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Across
  1. 1. anatomy-comparative anatomy, the comparative study of the body structures of different species of animals in order to understand the adaptive changes they have undergone in the course of evolution from common ancestors.
  2. 4. or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person's body has the same DNA.
  3. 5. a distinctive attribute or aspect of something
  4. 9. In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection.
  5. 10. (something) suitable for a new use or purpose; modify.
  6. 11. in biology, classification comprising related organisms that share common characteristics and are capable of interbreeding.
  7. 15. structure-Analogous structures are features of different species that are similar in function but not necessarily in structure and which do not derive from a common ancestral feature (compare to homologous structures)
  8. 16. structure- homologous structures are similar physical features in organisms that share a common ancestor, but the features serve completely different functions.
  9. 18. ancestor-n biology and genealogy, the most recent common ancestor (MRCA), also known as last common ancestor (LCA), or concestor of a set of organisms is the most recent individual from which all the organisms of the set are descended.
  10. 19. individual animal, plant, or single-celled life form
Down
  1. 2. 1 : originating in or based on observation or experience empirical data. 2 : relying on experience or observation alone often without due regard for system and theory an empirical basis for the theory. 3 : capable of being verified or disproved by observation or experiment empirical laws.
  2. 3. arrangement of and relations between the parts or elements of something complex
  3. 4. process of developing or being developed
  4. 6. a period of ten years.
  5. 7. structure-Vestigial is used in science to describe structures like animal organs, tissues, or bones that may have been used by an ancestor but aren't anymore.
  6. 8. any of the pieces of hard whitish tissue making up the skeleton in humans and other vertebrates
  7. 12. the branch of biology and medicine concerned with the study of embryos and their development.
  8. 13. Darwin-Charles Darwin, in full Charles Robert Darwin, (born February 12, 1809, Shrewsbury, Shropshire, England—died April 19, 1882, Downe, Kent), English naturalist whose scientific theory of evolution by natural selection became the foundation of modern evolutionary studies.
  9. 14. are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers.
  10. 17. study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industries.