DNA packing - Biology Forum

last updated by

angel 18 years, 7 months ago

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- April 9, 2006 at 1:35 pm #4374
  Liau
  Participant
  Total length of human DNA per cell is 1-2 metres, it is roughly 8.5cm per chromosome. There are 46 chromosomes in a cell. The chromosomes are separated from each other. My question are, is the 2m long DNA measured by joining each 8.5cm DNA or
  the 2m DNA is never cut or separate and it is a continual seqeunce?
  If it is continual sequence, how can it being assorted into 46 chromosomes? [/b]
- April 10, 2006 at 8:41 am #45566
  Enzyme
  Participant
  I hope it will be useful for you:
  http://www.ndsu.nodak.edu/instruct/mccl … karyo3.htm
  See you! 😉
- April 10, 2006 at 8:54 am #45567
  angel
  Participant
  the total length of DNA packed inside the nucleus is 2 meters. About 8.5 cm per chromosome. there are 46 chromosomes thus DNA is not full 2 m log. it is divided in 46 parts. the length of each chromosome is measured using cytogenetic tools and then it is added to give total length of the DNA. 8.5 cm per chromosome is just an average taken out.
  hope you got your answer 🙂
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