Cov txheej txheem:

Dab tsi yog qhov feem ntau yuav ua rau kev xaiv kev taw qhia?
Dab tsi yog qhov feem ntau yuav ua rau kev xaiv kev taw qhia?

Video: Dab tsi yog qhov feem ntau yuav ua rau kev xaiv kev taw qhia?

Video: Dab tsi yog qhov feem ntau yuav ua rau kev xaiv kev taw qhia?
Video: 6 Nqi Lus Qhia Kev Ua neej ( leej twg mloog lub neej yuav zoo tuaj) 2024, Kaum ib hlis
Anonim

Kev taw qhia kev xaiv tshwm sim feem ntau feem ntau nyob rau hauv ib puag ncig kev hloov pauv thiab thaum cov neeg tsiv teb tsaws chaw mus rau thaj chaw tshiab nrog kev sib txawv ntawm ib puag ncig. Kev taw qhia kev xaiv tso cai rau kev hloov pauv sai hauv allele zaus, thiab ua lub luag haujlwm tseem ceeb hauv speciation.

Ua raws li qhov no hauv kev txiav txim siab, qhov kev xaiv taw qhia txhais li cas?

Kev taw qhia kev xaiv yog hom ntuj xaiv nyob rau hauv uas cov phenotype (cov yam ntxwv soj ntsuam) ntawm cov tsiaj nyhav mus rau ib tug heev theej txhais tau tias phenotype los yog opposite heev phenotype.

Kuj Paub, qhov txawv ntawm kev cuam tshuam thiab kev xaiv kev taw qhia yog dab tsi? Kev taw qhia kev xaiv tau piav raws li qhov xaiv rau ib qho tshwj xeeb phenotype hauv pejxeem as opposed to the other phenotypes. Kev xaiv cuam tshuam yog thaum cov pejxeem muaj xaiv pressures ua raws li nws uas xaiv tawm tsam qhov nruab nrab phenotypes thiab huab phenotypes yog xaiv rau.

Ib yam li ntawd, tej zaum koj yuav nug, cov piv txwv ntawm kev cuam tshuam kev xaiv yog dab tsi?

Kev cuam tshuam kev xaiv piv txwv: Xim

  • Peppered npauj: Ib qho piv txwv ntawm kev tshawb fawb tshaj plaws ntawm kev cuam tshuam kev xaiv yog rooj plaub ntawm ?London's peppered npauj.
  • Oysters: Lub teeb- thiab xim tsaus nti tuaj yeem muaj qhov zoo nkauj zoo nkauj uas tsis yog lawv cov txheeb ze xim nruab nrab.

Vim li cas thiaj xaiv qhov ruaj khov tshaj plaws?

Qhov no txhais tau tias feem ntau phenotype nyob rau hauv cov pejxeem yog xaiv rau thiab tseem yuav kav rau tiam tom ntej. Vim feem ntau Cov yam ntxwv hloov me ntsis raws sijhawm, ruaj khov xaiv xav tias yog tus feem ntau hom ntawm xaiv hauv feem ntau cov pejxeem.

Pom zoo: