Genetics

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Across
  1. 2. The molecule that carries genetic instructions, found in the nucleus
  2. 4. The combination of alleles an organism has for a gene
  3. 5. The observable characteristic that results from a genotype
  4. 6. The organelle in a cell where DNA is stored
  5. 9. A different version of a gene
  6. 11. Describes a pair of chromosomes that match, carrying the same genes in the same positions
  7. 12. Type of allele whose effect is shown even if only one copy is present
Down
  1. 1. One of the four chemical letters that make up the DNA code
  2. 3. Type of allele whose effect is masked unless two copies are present
  3. 4. A specific section of a chromosome that carries instructions for one trait
  4. 7. The basic unit of life
  5. 8. A tightly packaged, organised structure made of DNA
  6. 10. The specific position of a gene on a chromosome