Peb qhov laj thawj tseem ceeb ntawm kev hloov pauv hloov pauv yog dab tsi?
Peb qhov laj thawj tseem ceeb ntawm kev hloov pauv hloov pauv yog dab tsi?

Video: Peb qhov laj thawj tseem ceeb ntawm kev hloov pauv hloov pauv yog dab tsi?

Video: Peb qhov laj thawj tseem ceeb ntawm kev hloov pauv hloov pauv yog dab tsi?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Allele frequencies nyob rau hauv ib tug pej xeem tej zaum yuav hloov vim 4 tsim nyog zog of evolution : Natural Selection, Genetic Drift, Mutations thiab Gene Flow. Kev hloov pauv yog qhov kawg ntawm cov alleles tshiab hauv cov noob caj noob ces. Ob ntawm cov feem ntau cuam tshuam mechanisms ntawm evolutionary hloov yog: Natural Selection thiab Genetic Drift.

Tsis tas li ntawd, kev hloov pauv hloov pauv yog dab tsi?

Hauv biology, evolution yog cov hloov nyob rau hauv cov yam ntxwv ntawm ib hom ntau ntau tiam neeg thiab tso siab rau cov txheej txheem ntawm ntuj xaiv. Evolution vam tias muaj kev hloov pauv caj ces? nyob rau hauv cov pejxeem uas cuam tshuam rau lub cev yam ntxwv (phenotype) ntawm ib tug kab mob.

Kuj Paub, dab tsi yog 3 lub hauv paus ntsiab lus ntawm kev hloov caj ces? Peb qhov chaw ntawm kev hloov caj ces yog kev hloov pauv , genetic recombination thaum lub sij hawm kev sib deev kev sib deev thiab lateral hloov mus rau genetic.

Ua li no, peb yam tseem ceeb uas yuav tsum tau muaj rau evolution yog dab tsi?

Plaub yam yuav tsum tau muaj rau natural xaiv tshwm sim: kev yug me nyuam, heredity, variation nyob rau hauv lub cev los yog kab mob, variation nyob rau hauv ib tug neeg cim ntawm cov tswv cuab ntawm cov pejxeem. Yog lawv ntsib, natural xaiv txiav txim.

Ib qho piv txwv ntawm evolution yog dab tsi?

Evolution Piv txwv hauv Ntuj. Peppered npauj - Cov npauj no muaj lub teeb xim tsaus nti tom qab Kev Lag Luam Kev Lag Luam, vim muaj kuab paug ntawm lub sijhawm. Qhov kev hloov pauv no tau tshwm sim vim tias lub teeb xim npauj tau pom los ntawm cov noog tau yooj yim dua, yog li nrog kev xaiv ntuj, cov npauj tsaus nti tau muaj sia nyob kom rov tsim dua.

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