Variation and selection

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Across
  1. 5. probability of an organism surviving and reproducing in the environment
  2. 8. the way of calling the two different parts of the DNA
  3. 9. is the base unit of nucleic acids
  4. 11. differences between individuals of the same species
  5. 13. inhereted feature thet helps an organism survive and reproduce its environment
  6. 14. is a single-stranded molecule that carries genetic code from DNA in a cell's
  7. 15. changein the base sequence in DNA
  8. 16. survives the organism that is better fitted to the conditions in which they live
Down
  1. 1. take the form of disctint, alternative phenotypes with no intermediates
  2. 2. is a description of the molecular shape of a duble-stranded DNA molecule
  3. 3. to ribosomes
  4. 4. become more suited to their environment over many generations
  5. 6. a particle consisting of two subunits that fit together and work as one to build proteins
  6. 7. the ones that form the DNA
  7. 10. the change in adaptive features of a population over time as a resulte of natural selection
  8. 12. spontaneous genetic change (the way new alleles are formed)