Musoro: Mibvunzo Yemuenzaniso Inotsanangura Nezvemajini uye Hukama Hwawo Nehunhu
Pendauluan
Genotype ndiyo majini echisikwa chinosarudza humwe hunhu hunoonekwa (phenotype). Kunzwisisa genotype hakungokoshi chete pakunzwisisa hunhu hwemunhu asiwo pakunzwisisa kuti hunhu uhwu hunogarwa sei nhaka kubva kuchizvarwa kuenda kune chimwe. Muchinyorwa chino, tichakurukura mienzaniso yakati wandei yemajini uye tichakurukura hukama hwawo nehunhu hunoonekwa.
Kunzwisisa Marudzi Ezvinhu
Genotype inoreva ruzivo rwemajini rwuri muDNA yechisikwa. Inowanzobatanidzwa nealleles, ayo ari kusiyana kwejini rakati. Muzvisikwa zvinoberekana pabonde sevanhu, jini rega rega rinowanzova nealleles mbiri, imwe inogarwa nhaka kubva kumubereki wega wega. Musanganiswa wealleles uyu ndiwo watinodaidza kuti genotype.
Musiyano uripo pakati pemajini ne phenotype wakakoshawo. Kunyange zvazvo genotype iri kodhi yemajini, phenotype iratidziro yemuviri kana hunhu hunoonekwa, senge ruvara rwemaziso, ruvara rwebvudzi, kana chimiro chemashizha mumuti.
Mibvunzo yemuenzaniso weGenotype uye Kukurukurirana
Kuti tinzwisise kuti majini anosarudza sei hunhu, ngatitarisei mimwe mienzaniso yezvinetso.
Muenzaniso Mubvunzo 1
Mubvunzo: Muzvirimwa zvepizi, rudzi rweRR genotype runoburitsa maruva matsvuku, uye rudzi rweRR genotype runoburitsa maruva machena. Kana zvirimwa zviviri zvine rudzi rweRr genotype zvikasanganiswa, sarudza mukana weruvara rweruva rwunobva muvana.
Kukurukurirana:
Muchiitiko ichi, tinoshandisa Mutemo waMendel weNhaka yeHunhu kuti mhinduro ive nyore.
1. Sarudza magamete anogadzirwa nemunhu mumwe nemumwe. Kune Rr, magamete anogadzirwa ndiR naR.
2. Gadzira tafura yePunnett kuti uone ma genotypes angangove ari muvana.
``
R r
----
R | RR | Rr |
----
r | Rr | rr |
``
3. Verengai ma genotypes angangovepo:
– RR: 1/4 kana 25%
– Rr: 2/4 kana 50%
– rr: 1/4 kana 25%
4. Wobva wabatanidza rudzi urwu rwemajini ne phenotype:
– Maruva matsvuku (RR neRr): 75% (25% + 50%)
– Maruva machena (rr): 25%
Mhedzisiro yeMaonero eHunhu:
Vana vane mukana we75% wekuva nemaruva matsvuku uye mukana we25% wekuva nemaruva machena.
Muenzaniso Mubvunzo 2
Mubvunzo: Bvudzi rebrown mumbeva rinobva pagene B richitonga gene b rinoburitsa bvudzi dema. Kana mbeva ine heterozygous (Bb) ikabatana nembeva ine bvudzi dema (bb), tsvaga huwandu hwevana vanozvarwa.
Kukurukurirana:
1. Sarudza ma gametes anogona kugadzirwa:
– Bb: B, b
– bb: b, b
2. Gadzira tafura yepunnett:
``
bb
----
B | Bb | Bb |
----
b | bb | bb |
``
3. Sarudza ma genotypes angangoitika:
– Bb: 2/4 kana 50%
– bb: 2/4 kana 50%
4. Batanidza genotype ne phenotype:
– Bvudzi rebrown (Bb): 50%
– Bvudzi dema (bb): 50%
Mhedzisiro yeMaonero eHunhu:
Vana vane mukana we50% wekuva nemvere dzebrown uye mukana we50% wekuva nemvere nhema.
Penutup
Kuburikidza nekukurukura kwemubvunzo uri pamusoro apa, tinogona kuona kuti genotype inokanganisa sei nhaka yehunhu muvana. Kunzwisisa kwakanaka genotype uye hukama hwayo nehunhu kunobatsira kwete chete mukudzidza majini asiwo mumashandisirwo anoshanda akadai sekurima nekubereka. Kuongorora genotype hakungobatsiri chete kuona phenotypes dzinogona kuitika asi kunogonawo kushanda sehwaro hwekuwedzera kuyedza majini kuti kubudise hunhu hunodiwa.
Kugona kuongorora nekufanotaura mhedzisiro ye genotypic idanho rakakosha mukunzwisisa kuoma kwemajini uye kuti hunhu hunogarwa nhaka sei. Izvi zvinotibvumira kuita sarudzo dziri nani munzvimbo dzakasiyana kubva pahutano kusvika pakurima, zvichibva paruzivo rwemajini. Kudzidza kwakawanda uye kushandiswa kwetekinoroji yepamusoro yemajini kunogona kugadzira nzira yekuvandudza zvinhu zvinobatsira nzanga yese.
