Hauv tib neeg lub peev xwm saj PTC ntawv ( phenylthiourea carbaminde) yog qhov tseem ceeb. Tasters (TT) los yog (Tt) perceive a repulsively iab saj. Nontasters tsis muaj rhiab heev rau PTC, thiab yog li ntawd saj tsis muaj dab tsi. … Gagglebud tau saj PTC thiab muaj peb tug me nyuam, ib tug ntawm cov uas tsis yog-taster.
Yog qhov tsis muaj peev xwm saj phenylthiourea dominant lossis recessive Koj paub li cas?
Lub peev xwm saj PTC feem ntau yog kho raws li tseem ceeb genetic trait, txawm tias qhov qub txeeg qub teg thiab kev nthuav qhia ntawm tus cwj pwm no nyuaj me ntsis.
Qhov twg yog qhov tseem ceeb ntawm lub peev xwm saj PTC lossis tsis muaj peev xwm saj PTC?
Lub peev xwm saj PTC, tshuaj iab, tau txais los ua ib qho autosomal dominant trait. Ib tug poj niam tsis muaj me nyuam nrog ib tug txiv neej uas yog PTC taster.
homozygous dominant genotype yog dab tsi?
Ib yam kab mob uas muaj ob qho tseem ceeb alleles rau qhov zoo yog hais tias muaj homozygous dominant genotype. Siv qhov muag xim piv txwv, qhov genotype no tau sau BB. Cov kab mob nrog ib qho tseem ceeb allele thiab ib qho recessive allele yog hais tias muaj ib tug heterozygous genotype.
Vim li cas thiaj xav tias coob leej tib neeg thiaj tau saj PTC?
Lub peev xwm saj phenylthiocarbamide (PTC) yog ib qho phenotype classic uas tau paub ntev los sib txawv ntawm tib neeg. Cov phenotype no yog cov noob caj noob ces, kev kis kab mob, thiab kev hloov pauv hloov pauv vim tias muaj peev xwm saj PTC cuam tshuam nrog lub peev xwm saj lwm yam iab, ntau ntawm uas yog tshuaj lom.
