Genetics Module 3 Crossword

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Across
  1. 6. Two-step reduction division that produces four haploid nuclei
  2. 8. Process that inactivates all but one X chromosome in a cell
  3. 9. Dark spot in an interphase nucleus representing an inactivated X chromosome
  4. 10. Three copies of a chromosome instead of two
  5. 11. A change in chromosome number involving multiples of a full haploid set
  6. 12. Failure of chromosomes to separate properly at the first or second meiotic division
  7. 14. A chromosome number that is not an exact multiple of the haploid set
  8. 15. Only one copy of a chromosome instead of two
Down
  1. 1. Having one set of chromosomes (n = 23 in humans)
  2. 2. Having the normal chromosomal makeup of an individual
  3. 3. An organized picture of a person’s chromosomes used to detect abnormalities
  4. 4. A “colored body” counted by the number of centromeres
  5. 5. Division that produces two genetically identical diploid daughter cells
  6. 7. Having 69 chromosomes, a full third set, often from dispermy
  7. 13. Pairing of homologous chromosomes in prophase I of meiosis