Biology Meiosis and Genetics

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Across
  1. 3. having 2 of the same allele for trait (GG, hh)
  2. 8. full set of genetic info(chromosomes)
  3. 9. markers that allow cells to be identified
  4. 12. half set of genetic info
  5. 13. having 2 different alleles for trait(Jj, Ll)
  6. 14. crossing over occurs (exchange of genetic info between homologous chromosomes);nucleus dissolves;spindle fibers form
  7. 16. pairs of homologous chromosomes line up on the metaphase plate(independent assortment);spindle fibers attatch
  8. 17. cells elongate;four nuclei from around haploid sets of chromosomes(one in each cell)
  9. 18. reproductive cells
  10. 20. chromatids are pulled apart in each cell
  11. 21. chromosomes line up on the metaphase plates(independent assortment);spindle fibers attatch
  12. 26. cell divides and prepares to start Meiosis 2
  13. 27. gametes that end up fertilizing one another are totally random
  14. 28. homologous chromosomes are pulled apart by spindle fibers; more towards opposite sides of elongating cell
  15. 29. visual representation of Mendel's Laws
  16. 30. laws created by genetic scientist Mendel that declare how an individual inherits traits from parents
Down
  1. 1. cells divide and 4 unique haploid daughter cells result
  2. 2. 2 alleles are equally dominant and are expressed simultaneously in the phenotype
  3. 4. nuclei dissolve again;spindle fibers reform
  4. 5. condensed form of DNA seen during cell division; 46 chromosomes in each human body/cell 23 in each sperm/egg cell
  5. 6. genetic material
  6. 7. display of individual's 46 chromosomes; each set contains 1 from egg and 1 from sperm
  7. 10. homologous pairs and individual chromosomes line up in random orientations during metaphase 1, 2
  8. 11. sections of DNA that code for a physical characteristic(eye color, hair color)
  9. 15. versions or forms of a gene that code for a specific physical characteristic;can be dominant or recessive(brown eyes, black hair)
  10. 19. cell elongates and new nuclei from around each group of chromosomes
  11. 22. 2 alleles are equally dominant and a hybrid is expressed in the phenotype(black and white cats-grey kittens)
  12. 23. proteins that recognize and fight invading cell
  13. 24. an organism's combination of alleles(ie. Gg HH, ee)
  14. 25. regular body cells(diploids)