Genetics - key words

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Across
  1. 3. Two copies of the same allele e.g. aa
  2. 4. Contains two sets of chromosomes in the nucleus
  3. 9. Building blocks of DNA and RNA (sugar + phosphate + base)
  4. 11. Two different alleles e.g. Aa
  5. 12. Chromosomes which determine gender
  6. 14. Different forms of the same gene e.g. A or a
Down
  1. 1. Contains one set of chromosomes in the nucleus
  2. 2. “Stronger” characteristic – always expressed if present
  3. 5. Section of DNA that codes for a particular characteristic
  4. 6. “Weaker” characteristic - only expressed in the homozygous condition
  5. 7. Double helix made of nucleotides which gives the characteristics of most living things
  6. 8. Genetics of a particular gene e.g. Aa, aa, AA
  7. 10. Thread-like structures composed of condensed DNA
  8. 13. Physical characteristics of an organism