why hemophilia, colorblindness kayotypic diseases??

Discussion in 'DAT Discussions' started by tRNA, May 4, 2007.

  1. tRNA

    tRNA Member
    10+ Year Member

    Joined:
    Apr 28, 2005
    Messages:
    280
    Likes Received:
    0
    why are Hemophilia and color blindness karyotypic diseases involving x-linkage.??
    I know that they are xlinked diseases, but why are they karyotypic?? karyotypic diseases involve an error in the number of chromosomes like down (47chromosmes) and turners syndrome (45chromosomes), but hemophilia and color blindness are just due to recessive allels, there is no mistake in the total number of Chromosomes so why are we calling them "karyotypic" diseases
    plz help, thanks
     
  2. Note: SDN Members do not see this ad.

  3. tRNA

    tRNA Member
    10+ Year Member

    Joined:
    Apr 28, 2005
    Messages:
    280
    Likes Received:
    0
    i really need help with this one guys...anyone??
     
  4. DailyDrivenTJ

    2+ Year Member

    Joined:
    Mar 20, 2007
    Messages:
    227
    Likes Received:
    0
    Status:
    Pre-Dental
    I can't answer the first question as to why it is X linked. I bet no one can answer that but only God. :)

    Karyotypic disease not only includes those diseases that are caused nondisjunctional chromosome that you are describing but also any diseases caused by abnormal chromosome character.
     
  5. Danny289

    Danny289 Member
    2+ Year Member

    Joined:
    Dec 2, 2006
    Messages:
    1,523
    Likes Received:
    4
    Status:
    Pre-Dental
    just pay attention to the defination of karyotypic :)

    karyotypic (from campbell Bio book)==> A metod of orgaganizing the chromosoms of a cell in relation to the number , size ,and type.

    and plus this part from campbell Bio book (Six Eddition) page 236: :)
    " the human life Cycle"

    :)
     
  6. tRNA

    tRNA Member
    10+ Year Member

    Joined:
    Apr 28, 2005
    Messages:
    280
    Likes Received:
    0
    thanks daily, i said i don't need help with the part about why it's xlinked, I just needed help with why its "karyotipic" but thank u both for clarifying
     

Share This Page