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Across
  1. 1. Helix: The twisted ladder structure of the DNA molecule
  2. 4. Having two sets of chromosomes, one from each parent
  3. 6. Alternative form of a gene at a specific location on a chromosome
  4. 7. The study of heredity and variation in living organisms
  5. 9. Variation: Diversity in gene types within a population
  6. 10. When both alleles are expressed equally in the phenotype
Down
  1. 1. Trait that masks the effect of a recessive allele
  2. 2. Basic unit of heredity, a sequence of DNA that codes for a specific trait
  3. 3. Having a single set of unpaired chromosomes
  4. 4. Molecule that carries genetic instructions for development and functioning
  5. 5. Mature reproductive cell (egg or sperm) with a haploid set of chromosomes
  6. 8. Thread-like structure of nucleic acids and protein in the nucleus