Unit 4 Biology; Created by Chiamaka

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Across
  1. 7. Nucleotides are linked by ____ bonds to form an alternating sugar–phosphate backbone
  2. 8. 2 different alleles
  3. 9. the genetic makeup of an organism
  4. 12. _____ reproduction; union of sperm and egg to create a zygote
  5. 13. ____ reproduction; a single parent splits to create a clone
  6. 15. 2 identical alleles
  7. 17. binds to DNA and wraps it into coiled and compacted loops
  8. 18. ____square a grid arrangement of possible allele combinations
  9. 19. _____is the site a gene occupies in a chromosome
Down
  1. 1. DNA replicates in this stage and proteins(histone) are synthesized
  2. 2. Special enzymes recognize *incorrectly paired nucleotides* and remove them; known as a _____ pair
  3. 3. changes in the sequence of bases in DNA
  4. 4. DNA fragments are joined by DNA_____
  5. 5. RNA primer is synthesized by ____Primase
  6. 6. the transmission of genetic information from parent to offspring: predictable patterns
  7. 7. division of cell cytoplasm to form 2 cells
  8. 10. the physical appearance of an organism
  9. 11. who has 46 chromosomes in the somatic cell?
  10. 14. the science of heredity
  11. 16. fragments 100- to 2000-nucleotide fragments