Vim li cas kev sib deev tseem ceeb?
Vim li cas kev sib deev tseem ceeb?

Video: Vim li cas kev sib deev tseem ceeb?

Video: Vim li cas kev sib deev tseem ceeb?
Video: Vim Li Cas Kev Kawm thiaj Tseem Ceeb. ເປັນຫຍັງການສຶກສາຈຶ່ງ ສຳ ຄັນ 1/28/20 2024, Kaum ib hlis
Anonim

Kwv yees li 1.3 billion xyoo dhau los, kev sib deev pib sib xyaw cov noob thiab ua txoj hauv kev rau ntau haiv neeg uas peb pom niaj hnub no. Nws yog loj heev tseem ceeb nyob rau lub sij hawm no vim nws tso cai rau cov kab mob pib combing noob, cia cov tiam tom ntej ua ntau tshaj nws niam nws txiv; upping txoj kev ciaj sia.

Dhau li ntawm no, dab tsi yog qhov zoo ntawm kev sib deev kev sib deev?

Qhov zoo ntawm kev sib deev : ua genetic variation nyob rau hauv cov xeeb ntxwv. cov tsiaj tuaj yeem hloov mus rau qhov chaw tshiab vim muaj kev hloov pauv, uas ua rau lawv muaj sia nyob qhov zoo . tus kab mob tsis tshua muaj feem cuam tshuam rau tag nrho cov tib neeg hauv cov pej xeem.

Dab tsi yog qhov tseem ceeb ntawm kev yug me nyuam? Kev tsim tawm yog ib qho tseem ceeb ntawm txhua tus tsiaj nyob. Kev tsim tawm yog tseem ceeb rau kev ciaj sia ntawm txhua yam muaj sia. Tsis muaj ib tug mechanism rau Kev tsim tawm , lub neej yuav xaus. Kev tsim tawm pab tswj kom muaj kev sib npaug ntawm ntau yam kab mob bactericidal ntawm ecosystem.

Tsis tas li ntawd, vim li cas kev sib deev yog kev sib deev?

Thaum kev sib deev , cov khoom siv caj ces ntawm ob tus neeg tau ua ke los tsim cov noob caj noob ces uas txawv ntawm lawv niam lawv txiv. Qhov tseeb tias feem ntau eukaryotes tsim tawm kev sib deev yog pov thawj ntawm nws evolutionary vam meej. Nyob rau hauv ntau yam tsiaj, nws yog tiag tiag hom ntawm kev yug me nyuam.

Dab tsi yog 3 qhov tsis zoo ntawm kev yug me nyuam asexual?

  • Cov kev hloov pauv tsis zoo nyob ntev dua hauv cov kab mob asexual.
  • Kev sib txawv yog txwv.
  • Cov naj npawb ntawm cov pej xeem tuaj yeem tswj tau yooj yim.
  • Yuav muaj qhov tsis muaj peev xwm hloov tau.
  • Cov neeg coob coob tuaj yeem yog qhov teeb meem tiag tiag.
  • Kev tsim tawm tuaj yeem tsim kev sib tw.

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