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Helitaanka dhismaha DNA-da

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Waxaan sharxi karaa sida saynisyahannadu u ururiyeen caddayn oo ay u wadaageen natiijooyin si ay u horumariyaan moodel sharxaya dhismaha DNA-da.

Hordhac

Soo dhawoow darsigan oo ka tirsan cutubka loo yaqaan 'Heredity and DNA'. Mawduuca maanta waa helista qaabka DNA-da. Waa inaad horey u taqaanid fikradda guud ee DNA-da iyo sida ay u xidhan tahay dhaxalka.

Muuji qoraalka
DNA was discovered in 1869, but scientists did not work out its structure until 1953. Scientists collected evidence and shared findings to develop a model to describe the structure of DNA. Rosalind Franklin’s team in London used X-rays to produce an image of a DNA molecule in1952. Maurice Wilkins from Franklin’s group showed the picture to James Watson from Cambridge. Watson and Francis Crick used the picture evidence to complete a model to describe the double helix structure of DNA.

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Imtixaannada

  1. 1. Noocee unug (cell) ah oo **aan** DNA-ga ku kaydin gudaha nucleus-ka?

    • Unug xayawaanka (animal cell)
    • Unug dhirta (plant cell)
    • Jawaabta saxda ah:Unug bakteeriyada (bacteria cell)
    • Unug fangaska (fungi cell)

  2. 2. Maxaa lagu kaydiyaa DNA-da?

    • sifooyinka noolaha
    • nucleus-ka
    • Jawaabta saxda ah:koodhka hidaha (genetic code)
    • unugyada

  3. 3. Mid ka mid ah weedhahan soo socda ayaa si fiican u sharxaya qaab-dhismeedka DNA?

    • wareegsan
    • jaranjaro leh
    • helix
    • Jawaabta saxda ah:double-helix

  4. 4. Maxay tahay sababta loo helay dhaxalka astaamaha (heredity of features) ka hor inta aan la helin DNA?

    • Nooleyaashu waxay leeyihiin xaddi yar oo DNA ah.
    • DNA waa kiimiko (chemical) sidaas darteed lama arki karo.
    • Jawaabta saxda ah:Astaamaha waa la arki karaa iyada oo aan loo baahnayn qalab, DNA-na lama arki karo.

  5. 5. Waa maxay afarta xaraf oo ka kooban koodhka hidaha (genetic code)?

    • ACGD
    • Jawaabta saxda ah:ATGC
    • ADGC
    • GCTD
    • CGDA

  1. 1. Maxay James Watson iyo Francis Crick soo ogaadeen?

    • doorka DNA-da
    • jiritaanka DNA-da
    • Jawaabta saxda ah:qaabka (structure) DNA-da
    • meesha DNA-da ku taal

  2. 2. Sannadkii 1952-kii, maxay Rosalind Franklin soo saartay?

    • qalab kombiyuutar
    • sawir
    • qalab jireed
    • Jawaabta saxda ah:sawir raajo ah

  3. 3. Waa kuma magaca saynisyahan ee la shaqaynayay Rosalind Franklin ee King's College?

    • James Watson
    • Jawaabta saxda ah:Maurice Wilkins
    • Francis Crick

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