Biology

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Across
  1. 8. a random process as to which sperm meets which egg
  2. 10. the division of the cytoplasm to the two genetically identical cells
  3. 11. a zygote with any type of abnormal chromosome number
  4. 13. allows the unknown genotype to be determined
  5. 14. only found in males; makes a male a male
  6. 19. offspring are exact copies of parent
  7. 22. when the zygote has a complete extra set of chromosomes
  8. 23. DNA in a cell
  9. 24. the phenotypic expression of a gene at one locus alters that of a gene at a second locus
  10. 25. when a chromosome gains an extra segment lost from another, nonhomologous, chromosome
  11. 26. genetic makeup for a particular trait
Down
  1. 1. a gene that can have multiple phenotypic effects
  2. 2. 2 alleles each affect the phenotype in seperate, distinguishable ways
  3. 3. when a chromosome gains an extra segment lost from its sister chromatid
  4. 4. the reproductive cells that transmit genes from one generation to the next
  5. 5. when the zygote has an extra, or 3 total copies, of a particular chromosome
  6. 6. identical alleles for a particular trait
  7. 7. when a chromosomal fragment is lost and reattaches to the same chromosome in the reverse orientation
  8. 9. 2 different alleles for a particular trait
  9. 12. accounts for 90% of the cell cycle
  10. 15. when a chromosomal fragment is lost, thus genes are lost
  11. 16. the actual division of genetic material to produce two genetically identical cells
  12. 17. _________cells do not display density-dependent and anchorage-dependent inhibition
  13. 18. an individuals complete set of chromosomes
  14. 20. observable appearance of a particular trait
  15. 21. when the zygote has only 1 copy of a particular chromosome