11 Genetics revision

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Across
  1. 3. 2 identical daughter cells, each with all the chromosomes
  2. 4. A long section of DNA that contains many genes
  3. 6. Can create new alleles by changing the base sequence of DNA
  4. 7. Half old and half new, reduces errors
  5. 10. Gametes receive random maternal/paternal chromosomes = more variation
  6. 15. Variation in the DNA / genes
  7. 16. Any feature, physical or otherwise
  8. 17. Variation is ___________ if its in the DNA of the gametes
  9. 19. Increases the survival of a species
  10. 20. Something we can do to find out the genotype of an organism
Down
  1. 1. If all the offspring from a test cross are dominant, the mystery genotype is PROBABLY:
  2. 2. A section of DNA that codes for a trait
  3. 5. If ANY offspring from a test cross have the recessive phenotype, the mystery genotype must be:
  4. 8. Random gametes fuse = more variation
  5. 9. A trait that aids the survival of an organism in an enviroment
  6. 11. A long twisting molecule that contains genetic information
  7. 12. Creates new allele combinations = more variation
  8. 13. Increases the chances of a mutation happening
  9. 14. Made by meiosis
  10. 18. 4 non identical daughter cells, each with half the chromosomes, makes gametes