When does Crossing over occur?

Discussion in 'DAT Discussions' started by bluesdeluxe, Jul 25, 2006.

  1. bluesdeluxe

    bluesdeluxe Member

    Joined:
    Jun 14, 2006
    Messages:
    81
    Likes Received:
    0
    I've read several places that say it occurs only in tetra formation during Meiosis Prophase I. Other places suggest it happens in Meiosis Metaphase. I originally thought metaphase. Any definite answer here?
     
  2. Thread continues after this sponsor message. SDN Members do not see this ad.

  3. allstardentist

    allstardentist All-Star

    Joined:
    Apr 27, 2006
    Messages:
    927
    Likes Received:
    1
    Status:
    Dental Student
    i think its prophase I
     
  4. Clapton

    Clapton Member

    Joined:
    May 9, 2006
    Messages:
    33
    Likes Received:
    0
    Status:
    Pre-Dental
    In leptonema of early prophaseI of meiosis.
     
  5. bluesdeluxe

    bluesdeluxe Member

    Joined:
    Jun 14, 2006
    Messages:
    81
    Likes Received:
    0
  6. midwestboy

    midwestboy Member

    Joined:
    Jun 7, 2006
    Messages:
    184
    Likes Received:
    0
    Status:
    Dental Student
    leptotene stage of prophase I in meiosis
     
  7. flylab101

    flylab101 Member

    Joined:
    Feb 18, 2006
    Messages:
    50
    Likes Received:
    0
    Status:
    Pre-Dental

    What's leptotene stage? are there any other substage like that for the other main stages?
     
  8. fancymylotus

    fancymylotus A Whole New World
    Dentist

    Joined:
    Jul 21, 2004
    Messages:
    35,975
    Likes Received:
    17,402
    leptotene zygotene pachytene diplotene diakinesis (in prophase I)
     
  9. aggie-master

    aggie-master Scrub

    Joined:
    Apr 3, 2004
    Messages:
    745
    Likes Received:
    1
    Status:
    Dentist
    I had this question on the real DAT.

    The answer was Meiosis Prophase I.
     
  10. Banana Berry

    Banana Berry Junior Member

    Joined:
    Jul 3, 2006
    Messages:
    13
    Likes Received:
    0
    Status:
    Pre-Dental
    I had this question on real DAT,too..
     
  11. blankguy

    Joined:
    Aug 11, 2003
    Messages:
    4,800
    Likes Received:
    2
    Status:
    Dental Student
    Prophase I
    Sorry can help in joining the answer chorus :D
     
  12. djeffreyt

    djeffreyt Senior Member

    Joined:
    Jun 3, 2006
    Messages:
    1,769
    Likes Received:
    9
    Status:
    Dentist
    I wouldn't worry about these substages...the DAt won't test on them unless they suddenly decided last week to make the test 10000% harder.

    Just remember that Crossing Over occurs in Prophase I of meiosis, and you be fine...just watch out for the trick answer:

    c) on late night TV with John Edwards

    this is a trick aswer...do not fall for it.
     

Share This Page