Unit 7 Vocabulary Puzzle

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Across
  1. 2. The genetic makeup of an organism.
  2. 4. An allele that expresses its trait even if only one copy is present.
  3. 7. A physical trait of an organism determined by genetic factors.
  4. 8. A type of cell division that reduces chromosome number by half.
  5. 9. The first cell formed after fertilization.
  6. 13. Different forms of a gene.
  7. 14. A genotype with two different alleles.
Down
  1. 1. A cell with two complete sets of chromosomes.
  2. 2. A reproductive cell (sperm or egg).
  3. 3. A chart showing the number and appearance of chromosomes.
  4. 5. A genotype with identical alleles.
  5. 6. An allele that is expressed only when two copies are present.
  6. 10. A unit of heredity passed from parent to offspring.
  7. 11. Differences in genetics and/or phenotypes.
  8. 12. A cell with one complete set of chromosomes.