Evolution and Natural Selection

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Across
  1. 2. the production of new organisms by the combination of genetic information of two individuals of different sexes
  2. 4. a viral reproductive stage where the virus's DNA is replicated using the host cell's DNA
  3. 7. any movement of individuals, and/or the genetic material they carry, from one population to another
  4. 9. how a new kind of plant or animal species is created
  5. 10. a mode of reproduction in which a new offspring is produced by a single parent
  6. 11. the reduction in genomic variability that occurs when a small group of individuals becomes separated from a larger population
  7. 14. the process by which individuals compete for access to mates and fertilization opportunities
  8. 15. the biological mechanism by which organisms adjust to new environments or to changes in their current environment
  9. 17. the change in frequency of an existing gene variant in the population due to random chance
  10. 18. an infectious microbe consisting of a segment of nucleic acid surrounded by a protein coat
  11. 19. the study of development of an embryo from the stage of ovum fertilization through to the fetal stage
  12. 20. the diversity in a particular characteristic among individuals within a population
Down
  1. 1. the dying out of a species
  2. 3. one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome
  3. 5. Provides important evidence for evolution and the adaptation of plants and animals to their environments throughout time
  4. 6. organism adapts to its environment through selectively reproducing changes in its genotype
  5. 8. the main method of virus reproduction
  6. 12. evolution in two or more evolutionary entities brought about by reciprocal selective effects between the entities
  7. 13. small single-celled organisms
  8. 16. asexual reproduction by a separation of the body into two new bodies