Homozygous rau menyuam yaus yog dab tsi?
Homozygous rau menyuam yaus yog dab tsi?

Video: Homozygous rau menyuam yaus yog dab tsi?

Video: Homozygous rau menyuam yaus yog dab tsi?
Video: Exercise for Dysautonomia/POTS - Dr. Camille Frazier-Mills 2024, Kaum ib hlis
Anonim

Lub ntsiab txhais ntawm homozygous yog thaum lub cell hast two zoo tib yam luam ntawm ib tug gene. Ib qho piv txwv ntawm homozygous isa cell muaj cov noob xiav qhov muag los ntawm ob niam txiv.

Kuj paub yog, dab tsi yog heterozygous rau menyuam yaus?

heterozygous . Cov noob tuaj ua khub, hu ua alleles, thiab txhua khub nyob rau hauv ib qho chaw tshwj xeeb (los yog qhov chaw) ntawm chromosome. Yog hais tias ob lub alleles ntawm ib qho chaw zoo tib yam rau ib leeg, lawv yog homozygous; yog lawv txawv ib leeg lawm xwb heterozygous.

heterozygous trait yog dab tsi? Lub cev uas yog heterozygous rau a qhov zoo muaj ob qho sib txawv alleles rau qhov ntawd qhov zoo . Txij li cov kab mob muaj ob lub alleles rau txhua tus qhov zoo , thaum lub alleles ntawm ib khub heterozygous (Yy), lub dominant allele qhov zoo yog qhia thiab recessive allele qhov zoo ua npog.

Ib yam li ntawd, koj tuaj yeem nug, dab tsi yog qhov tseem ceeb rau cov menyuam yaus?

Nco ntsoov tias alleles txawv cov ntawv luam ntawm tib yam noob . Peb kuj tau kawm cov ntawv ntawd noob uas ib txwm qhia, lossis siv los ua qhov zoo, tshaj lwm cov alleles hu ua tseem ceeb , thaum cov ntawv luam ntawm noob uas tsis qhia yog tias a tseem ceeb allele nyob ib ncig ntawm yog hu ua rov ua dua.

Ib qho piv txwv ntawm qhov tseem ceeb yog dab tsi?

Piv txwv ntawm Cov yam ntxwv tseem ceeb Cov plaub hau tsaus yog tseem ceeb tshaj cov plaub hau daj los yog liab. Cov plaub hau curly yog tseem ceeb tshaj cov plaub hau ncaj. Baldness yog ib qhov tseem ceeb . Muaj ib tug poj ntsuam lub ncov (ib tug V-puab plaub hau) yog tseem ceeb tshaj muaj ib tug ncaj hairline. Freckles, cleftchin thiab dimples yog tag nrho piv txwv ntawm ib tug dominanttrait.

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