BIO CH 11

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lexdelmonico
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186636
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BIO CH 11
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2012-12-02 17:18:22
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BIO 11
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BIO CH 11
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  1. What did Gregor MENDEL STUDY?
    PEA PLANTS
  2. pEA PLANTS REPRODUCE HOW?
    sEXUALLY
  3. wHAT IS THE UNITING OF MALE AND FEMALE GAMETES?
    fertilization
  4. What is pollination?
    the transfer of pollen from the male part of a plant to the femal part of the plant
  5. What are the two types of pollination?
    self pollinat and cross pollinate
  6. What is self pollinate?
    male and female gametes come from same plant, offspring are identical to the parents
  7. What is cross pollinate?
    male and female gametes are from two different plants
  8. What is heredity?
    passing on of charactersitics from parents to offspring
  9. What are genetics?
    study of heredity
  10. What are traits?
    characteristics that are inherited
  11. What are hybrid?
    offspring of crosses between parents with different traits
  12. What are genes?
    dtermines traits
  13. What are alleles?
    forms of genes
  14. What did Mendel do in his experiment?
    crossed plants with contrasting traits
  15. What were Mendels three conclusions?
    • 1. Biological inheritance is determined by factors (genes)
    • 2. Rule of dominance: some alleles aredominant and others are recessive
    • 3. law of segregation: gametes randomly pair producing 4 combinations of alleles
  16. What are some examples of multiple alleles?
    eye color, rabbit fur color, blood type
  17. What are polygenic traits?
    traits controlled by more than two genes
  18. What are some examples of polygenic traits?
    human skin, wight, height
  19. What are homologous chromosomes?
    paired chromosomes with genes of smae traits in same order
  20. When does meiosis occur?
    in specialized cells that produce gametes
  21. What occurs in interphase I
    DNA replicates
  22. What occurs in prophase?
    • chromatin coils, spindle fibers form, homologous chromosomes pair up (matched gene by gene)
    • nonsister chromatids overlab and exchange material=crossing over
  23. What occurs in Metaphase I
    chromosomes attach to spindle fibers and homologous chromosomes line up side by side
  24. What occurs in Anaphase?
    homologous chromosomes separate by fibers and move to opposite ends of the cell
  25. What occurs in telophase I and cytokinesis?
    • nuclear membranes form and cell separate
    • the two cells produced by meiosis I have chromosomes and alleles that aare different from each other and from the diploid cell that entered meiosis I
  26. What occurs in prophase II?
    spindle fibers form
  27. What occurs in metaphase II
    chromosomes line up in the middle of the cell
  28. What occurs in Anaphase II?
    centromere splits sister chromatids and go to opposite ends of the cell
  29. What occurs in Telophase II?
    nuclei reform, spindle fibers break down, cytoplasm divides
  30. What is the end result of Meiosis/
    4 haploid cells
  31. Meiosis has ____ the number of chromosomes as parent cells.
    1/2
  32. What are chromosomes?
    groups of linked genes
  33. In gene maps, the closer together 2 genes get, ____.
    the more likely they are to be inherited together
  34. What do gene maps show?
    distance between genes on chromosomes
  35. The farther apart 2 genes are, ______.
    the less likely they are to be inherited

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