Cov txheej txheem:

Cov txiv pos nphuab puas muaj DNA?
Cov txiv pos nphuab puas muaj DNA?

Video: Cov txiv pos nphuab puas muaj DNA?

Video: Cov txiv pos nphuab puas muaj DNA?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Ripe strawberries yog qhov zoo tshaj plaws rau kev rho tawm DNA vim lawv yooj yim pulverize thiab muaj enzymes hu ua pectinases thiab cellulases uas pab ua kom cov phab ntsa ntawm tes. Thiab qhov tseem ceeb tshaj plaws, strawberries muaj yim daim ntawv luam ntawm txhua tus chromosome (lawv yog octoploid), yog li muaj ntau DNA cais.

Khaws qhov no hauv kev xav, vim li cas txiv pos nphuab muaj DNA?

Strawberries xav tau DNA vim DNA ua kom cov txiv hmab txiv ntoo. Cov DNA directs tag nrho cov cell kev ua ub no thiab dab tsi ua . Cov DNA kuj muab cov lus qhia coded rau lub strawberry tsim cov protein. Yog li tsis muaj DNA tus strawberry hlwb yuav tsis paub dab tsi ua thiab yuav ua li cas los tsim nws cov proteins.

Ib sab saum toj no, ntau npaum li cas DNA muaj strawberry? Txhua yam me me ntawm cov khoom muaj sia, hu ua cell, muaj DNA hauv nws. Hauv tib neeg txhua lub hlwb muaj 2cop ua DNA , mas in strawberries txhua tus ntawm no muaj 8cop ua DNA (cov kws tshawb fawb hu qhov no octoploid). Qhov ntawd txhais tau tias strawberries muaj 4x ua ntau cov ntawv luam ntawm DNA raws li tib neeg, ua rau nws yooj yim dua 4 zaug pom!

Ua raws li qhov no, koj yuav tau txais DNA los ntawm strawberry li cas?

YUAV UA LI CAS EXTRACT STRAWBERRY DNA

  1. Txias cov cawv hauv lub freezer.
  2. Tshem tawm cov nplooj ntsuab ntawm cov txiv pos nphuab thiab ntxiv rau lub hnab. Muab cov txiv pos nphuab tso rau hauv lub pulp.
  3. Ntxiv 1 tablespoon ntawm xab npum tais diav, ib teaspoon ntsev, thiab 1/3 ntawm ib khob dej rau lub hnab. Sib tov.

DNA ntawm Strawberry zoo li cas?

Cov DNA yuav zoo li ib tug dawb, pos huab los yog nplua stringy khoom. DNA tsis pom zoo li ib txoj hlua rau ntawm qhov muag liab qab, tab sis thaum ntau txhiab threads ntawm DNA tam sim no, koj yuav tau pom cov pab pawg loj ntawm threads ntawm DNA . 5. yog DNA pom nyob rau hauv tag nrho cov nyob los yog ib zaug nyob hlwb?

Pom zoo: