25 responses

  1. Harry manyamba
    July 16, 2010

    chromsom

    Reply

    • Harry manyamba
      July 16, 2010

      IthinK DNA adouble stranded helix with strands that are runni

      Reply

  2. saba khan arbab
    September 15, 2010

    nic websute

    Reply

  3. Md. Hasan
    November 22, 2010

    i got my concepts cleared.. thank you, it was explained in a well simplified manner.

    Reply

  4. Max
    November 6, 2011

    Thank you very very much. Well explained.

    10 stars/out of 5 😀

    Reply

  5. Jeff Melli
    July 24, 2013

    Are you sure this is correct? Humans have only 46 chromosomes but thousands of genetic traits. Aren’t genes a subset of chromosomes where are particular genetic trait is a small section of the DNA strand that comprises the chromosome?

    Reply

  6. Paul
    November 11, 2014

    This is wrong. Genes are NOT composed of tiny chromosomes. Each chromosome contains many genes. For example, humans have 23 pairs of chromosomes and around 20,000 genes. Thus, an average of about 1,000 genes per chromosome. In addition, there is a large amount of non-genic DNA in every chromosome.

    Reply

    • Surya y.
      August 10, 2017

      Hi. Sir. I am Surya. According to my opinion generally a chromosome is made up with DNA ( DNAs made up genes. the genes are formed by 4 types of bases such as thymin, cytocin, adenine, guanine.). But the statement on website a DNA is made up with tiny chromosome. What is it. However per example HIV virus is contain the RNA (genetic material). Is it contain any chromosome?!.

      Could please clear my doubt.! Please Sir..

      Reply

      • Ahmed
        January 2, 2018

        Hi Surya y. I am Ahmed.
        Simply you are correct
        And like what Paul has been said there is wrong information in this article

        Reply

  7. farida john
    December 12, 2015

    thanx very much now my mind started to open, but i would like to know how DNA organised in chromosome please help me

    Reply

  8. princee
    February 15, 2017

    I like it

    Reply

  9. Ankur
    February 26, 2017

    Genes are composed of chromosomes, wow, awesome!!!

    Reply

  10. Dean
    June 11, 2017

    Parts of this are wrong. Please change the part that Paul, on comments, discusses. I agree with Paul when he says….This is wrong. Genes are NOT composed of tiny chromosomes. Each chromosome contains many genes.
    Overall…this is not a clear explanation. Look at diagrams to help you understand the differences.

    Reply

    • Julie Heaton
      June 28, 2017

      I thought I was going crazy when I saw that. Thank you for verifying that I wasn’t. lol

      Reply

  11. Dean
    July 25, 2017

    The following statement should be changed…..
    When these segments are coiled in a form that can be easily duplicated, they are known as chromosomes.
    to….
    When these segments are coiled in a form so that the cell can be easily divided, they are known as chromosomes.
    Why?
    Because the DNA is actually duplicated during DNA synthesis when it is NOT coiled.

    The following statement should also be changed….
    Try to remember it like this- a gene is composed of tiny chromosomes, each of which determines a particular characteristic in a human.
    to….
    Try to remember it like this- a gene is composed of tiny parts of a chromosome, each of which determines a particular characteristic in a human.
    Why?
    A gene is not a tiny chromosome!!! Chromosome #21 and #22 are tiny chromosomes.

    Reply

  12. Jee-hae
    October 15, 2017

    Thanks for clearer explanation

    Reply

  13. Vikas
    January 11, 2018

    Their is two questions
    1, when DNA replication take palse ,, why chromosome number remains same after that
    2, we usually see in our textbooks that their is 23 number of chromosome and eatch of the are separate form eatch other as one DNA made that 23 chromosome then how they are separate from eatch other

    Reply

  14. AaaaBbbb
    December 9, 2018

    Explanation is very good.

    Reply

  15. Raji
    November 28, 2019

    Beautiful analysis very good great job

    Reply

  16. Ayaz urrahman
    November 12, 2020

    Thanks a lot

    Reply

  17. Josiah Ngula
    December 28, 2020

    A kids DNA is a composition of father’s DNA and the mothers. How do we determine the parents of a child through a DNA?

    Reply

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