Cov txheej txheem:

Yuav ua li cas koj ua tus ntoo khaub lig xeem?
Yuav ua li cas koj ua tus ntoo khaub lig xeem?

Video: Yuav ua li cas koj ua tus ntoo khaub lig xeem?

Video: Yuav ua li cas koj ua tus ntoo khaub lig xeem?
Video: yuam kev ua koj txiv tsev by nuj xeem nkauj tawm tshiab 2020-2021 2024, Kaum ib hlis
Anonim

Xeem hla koom nrog kev yug me nyuam ntawm tus neeg hauv nqe lus nug nrog lwm tus neeg uas qhia txog qhov tsis zoo ntawm tib qho kev coj cwj pwm. Kev txheeb xyuas qhov sib npaug ntawm cov xeeb ntxwv thiab cov xeeb ntxwv tau txiav txim siab seb tus neeg hauv nqe lus nug yog homozygous dominant lossis heterozygous.

Ib yam li ntawd, nws raug nug, qhov kev xeem hla nrog piv txwv yog dab tsi?

Hauv ib xeem , tus neeg uas tsis paub genotype raug hla nrog homozygous recessive tus neeg (Daim duab hauv qab). Xav txog cov hauv qab no piv txwv : Piv txwv tias koj muaj paj liab thiab dawb thiab xim liab (P) yog qhov tseem ceeb rau dawb (p). A xeem yuav txiav txim siab lub cev lub genotype.

Tom qab ntawd, lo lus nug yog, qhov piv txwv ntawm kev xeem hla yog dab tsi? Qhov no 1:1:1:1 phenotypic piv yog qhov classic Mendelian piv rau qhov kev sim hla uas cov alleles ntawm ob lub noob sib txawv ntawm nws tus kheej rau hauv gametes (BbEe × bbee).

Tib neeg kuj nug, txhais li cas los ntawm kev xeem tus ntoo khaub lig?

Kev txhais ntawm xeem .: ib genetic ntoo khaub lig nruab nrab ntawm ib tug neeg homozygous recessive thiab ib tug coj xav tias heterozygote los txiav txim lub genotype ntawm tom kawg.

Koj hla genotypes li cas?

Nws yog ib qho tseem ceeb uas koj ua raws li cov kauj ruam tsim nyog

  1. Ua ntej koj yuav tsum tsim kom muaj koj tus niam txiv ntoo khaub lig, lossis P1.
  2. Tom ntej no koj yuav tsum ua 16 square Punnett Square rau koj 2 yam koj xav hla.
  3. Cov kauj ruam tom ntej yog los txiav txim cov genotypes ntawm ob niam txiv thiab muab lawv cov ntawv los sawv cev rau cov alleles.

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