Biology

123456789101112131415
Across
  1. 4. we have 23 pairs of these
  2. 5. having two different alleles of a particular gene or genes.
  3. 8. the basic building block of nucleic acids
  4. 9. set of rules used by living cells to translate information
  5. 12. symbol C one of the four nucleobases
  6. 13. is one of two or more versions of a gene
  7. 15. is the basic physical and functional unit of heredity.
Down
  1. 1. what does dna stand for
  2. 2. one of two halves of a replicated chromosomes
  3. 3. is one of the two purine nucleobases
  4. 6. is two chemical bases bonded to one another
  5. 7. all genetic information of an organism
  6. 10. links a pair of sister chromatids together during cell division
  7. 11. genetic information
  8. 14. fixed position on a chromosome