Genetics 101!

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Across
  1. 4. expressed or observable traits
  2. 5. mutation leading to stop codon formation
  3. 7. protective caps
  4. 8. relation/marriage between two blood relatives
Down
  1. 1. unknown
  2. 2. differences in traits between two people
  3. 3. remove introns and fuse exons
  4. 6. one person, two cells lines (meaning, two genotypes)