Biology

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Across
  1. 3. new nuclei form around each set of chromosomes
  2. 5. copying part of DNA to make mRNA
  3. 9. pairs with adenine
  4. 13. pairs with thymine
  5. 14. chromosomes become visible
  6. 15. makes up the sugar-phosphate backbone in DNA
  7. 17. the process of transcription and translation
  8. 18. bases carry information for specific traits
  9. 21. single units that make up DNA
  10. 23. the cross between two homozygous organisms, resulting in the opposite phenotype
  11. 24. structure of DNA
  12. 26. the presence of two different alleles
  13. 27. using mRNA to build an amino acid protein chain
Down
  1. 1. portion of the DNA backbone that provides structural support
  2. 2. the relationship between two versions of a gene
  3. 4. a cell spends the most time in this phase
  4. 6. a trait that is expressed only when a genotype is homozygous
  5. 7. nuclear cell division
  6. 8. a property of double-stranded nucleic acids
  7. 10. chromosomes line up along the middle
  8. 11. pairs with guanine
  9. 12. pairs with cytosine
  10. 13. chromatids are pulled to opposite poles of the cell
  11. 16. the presence of two identical alleles
  12. 19. cell growth
  13. 20. the cross between two organisms that are identical for two traits
  14. 22. division of cytoplasm
  15. 24. contains code for every protein
  16. 25. a random change in a sequence of gene