Thaum tus tseem ceeb allele coexists nrog ib tug recessive allele nyob rau hauv ib tug neeg heterozygote, lawv cuam tshuam nrog ib leeg li cas? Lawv tsis cuam tshuam ib leeg.
Thaum twg muaj noob caj noob ces ua ke nrog cov noob caj noob ces txhais tau hais tias yog?
Cov noob tseem ceeb thaum ua ke nrog cov noob caj noob ces txiav txim siab qhov zoo yuav tsum tau qhia. Recessive gene tsis qhia thaum ua ke nrog cov noob tseem ceeb. Recessive genes tsuas yog qhia thaum ua ke nrog lwm cov noob caj noob ces. Nees nkaum ob khub ntawm Chromosomes zoo ib yam thiab hu ua autosomes.
Puas yog qhov tseem ceeb ntawm allele qhov ncauj qhov ntswg rau cov nyhuv ntawm cov allele recessive?
Ua tiav dominance tshwm sim thaum tus tseem ceeb allele tag nrho npog qhov muaj qhov tsis zoo. … Nyob rau hauv cov xwm txheej no uas muaj noob caj noob ces muaj nyob rau hauv ib yam kab mob tab sis npog los ntawm ib tug tseem ceeb counterpart, cov kab mob no yog hu ua ib tug cab kuj ntawm cov noob, raws li nws muaj peev xwm hais tau nyob rau hauv lub neej yav tom ntej tiam.
Dab tsi yog qhov txawv ntawm cov neeg heterozygous thiab homozygous?
Ib tug neeg homozygous muaj peev xwm nqa tau ib tug dominant los yog ib tug recessive allele thaum tus neeg heterozygous muaj ob qho tib si tseem ceeb thiab recessive alleles. Ib tug neeg homozygous tsim ib hom gamete thaum tus neeg heterozygous ua ob hom gametes.
Yuav kwv yees muaj pes tsawg tus xeeb ntxwv yuav muaj davhlau ya nyob twgpaj thiab dwarf?
Puas yuav kwv yees tias muaj pes tsawg tus xeeb leej xeeb ntxwv yuav muaj paj tawg paj thiab dwarf? Raws li txoj cai ntawm kev ywj pheej assortment, 25 nroj tsuag (1/16 ntawm cov xeeb ntxwv) yog kwv yees tias yuav yog aatt, lossis homozygous recessive. Koj nyuam qhuav kawm 12 nqe lus!
