Review Crossword

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Across
  1. 4. first step of the scientific method
  2. 5. a pair of chromosomes made of the same alleles
  3. 7. what a scientist manipulates in an experiment (2 words)
  4. 10. molecule made up of amino acids
  5. 11. an organism’s appearance
  6. 12. an observation that uses our 5 senses
  7. 13. an allele that will not be expressed unless it is homozygous
Down
  1. 1. formed when an egg is fertilized by a sperm
  2. 2. when the structure of DNA is changed (e.g. by radiation)
  3. 3. where plants use sunlight, C02 and water to make food
  4. 6. an observation that uses numbers
  5. 8. graphic used to predict the results of a genetic cross (2 words)
  6. 9. a method for predicting a genetic cross