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2011-11-15 22:42:40

Chapters 10,11,12,16,17, Cancer, 35
Show Answers:

  1. What is a gamete?
    A haploid cell either sperm or egg.
  2. What is meiosis?
    Prophase, Metaphase, Anaphase, Telephase
  3. What does crossing over achieve?
    • Homologous chromosomes exchange reciprical portions of themselves.
    • Ocures in Prophase 1
  4. Homologous chromosomes?
    Chromosomes that are the same function and size.
  5. Diploid chromosomes?
    Posessing 2 sets of chromosomes.
  6. Haploid chromosomes?
    Posessing a single set of chromosomes. (sex cells)
  7. Karyotype?
    What does it show?
    • A pictoral arangment of a full set of an organisms chromosomes.
    • Show the details of the chromosomes.
  8. What can be detected in karyotypes?
    Developemental disorders.
  9. What is nondisjunction?
    A failure of homologous chromosomes or sister chhromatids to seperate during cell division.
  10. When does nondisjunction occour?
    During meiosis 1 or 2.
  11. What occours if there is an abnormal number of sex chromosomes?
  12. With respect to chromosomes, meiosis involves:
    A) no duplications, 1 reaction
    B) 2 duplications, 1 reduction
    C) 2 duplications, 2 reductions
    D) 1 duplication, 2 reductions
    e) none of the above
    D) 1 duplication, 2 reductions
    (this multiple choice question has been scrambled)
  13. How do you interpret a pedigree?
  14. What do the circles and squares indicate?
  15. What does it mean if the shape is shaded or not?
  16. Pedigree may represent a recessive autosome, a dominant autosome or a sex-linked recessive. List examples of each type of disorder and be prepared to identify the genetic cause of the conditions we discussed in class.
  17. How do we use genetic markers to test for a particular genetic condition?
  18. How are restriction enzymes used in these tests?
  19. How do we use DNA probes to test for a particular genetic condition?
  20. What is found on the chip?
  21. Name the three tests we discussed that can indicate genetic problems in the developing fetus.
  22. How can we test for genetic problems before implanting an embryo?
  23. How can we test for genetic problems in the egg before fertilization?
  24. What fertility technique is used with these last two tests?
  25. How did Gregor Mendel control the breeding of pea plants?
  26. The theory of particulate inheritance has two parts, name them.
  27. What is a true breeding plant?
  28. What is Mendel's law of segregation?
  29. What is Mendel's law of independent assortment?