Zamkati
- amphaka atatu
- Kodi nchiyani chomwe chimatsimikizira mtundu wa tsitsi?
- kuphatikiza
- Mitundu ya amphaka atatu
- Kodi pali amphaka amphongo atatu?
Zachidziwikire kuti mwamvapo kuti amphaka amitundu itatu amakhala achikazi nthawi zonse. Ndizowona? Kodi nthawi zonse amakhala akazi?
Munkhaniyi ya Animal Chest tikufotokozera chifukwa chake izi zimachitika ndi tsatanetsatane kuti mudziwe ngati ndichikhalidwe cha akazi kapena, m'malo mwake, amuna amathanso kukhala ndi ubweya wa mitundu itatu.
Pemphani kuti mupeze yankho la funso ili: chifukwa amphaka a tricolor ndi akazi ndikuwone ngati sizingachitike mwa amuna achimuna.
amphaka atatu
Pa amphaka atatu, yemwenso amadziwika kuti carey, amadziwika ndi kuwonetsa mtundu wapadera wa malaya. Ubweya wake umakhala ndi malalanje, akuda ndi oyera. Kukula kwa mtundu uliwonse ndikosiyanasiyana.
Mu amphaka muli mitundu itatu yoyambira, yakuda, yalanje ndi yoyera. Mitundu yotsalayo ndi chifukwa cha ma gradients ndi kuphatikiza kwa zam'mbuyomu.
Chibadwa cha nyama chimakhala ndi tsitsi, lopindika, lolunjika, kapena lamawangamawanga, komanso utoto komanso utoto wofananira ndi ubweyawo.
Kodi nchiyani chomwe chimatsimikizira mtundu wa tsitsi?
Mtundu wa ubweya amphaka ndi mbali yogonana. Izi zikutanthauza kuti chidziwitso cha utoto wa tsitsi chimapezeka mu ma chromosomes ogonana.
Ma chromosomes ndi nyumba zomwe zimapezeka mkati mwa ma cell ndipo mumakhala chibadwa chonse cha nyama. Amphaka ali ndi ma chromosomes 38: 19 kuchokera kwa amayi ndipo 19 kuchokera kwa abambo. Kugonana ndi ma chromosomes omwe amatsimikizira kugonana ndipo iliyonse imaperekedwa ndi kholo.
Amphaka, monga zinyama zonse, ali nazo ma chromosomes awiri ogonana: X ndi Y. Mayi amapatsa X chromosome ndipo bambo amatha kupereka X kapena Y.
- XX: Mkazi
- XY: Mwamuna
Pa mitundu yakuda ndi lalanje ali pa chromosome X. Mwa kuyankhula kwina, kuti adziwonetsere, chromosome X iyenera kupezeka.Mwamuna amakhala ndi X imodzi, ndiye kuti izikhala yakuda kapena lalanje basi. Amayi omwe ali ndi ma X awiri akhoza kukhala ndi majini akuda ndi lalanje.
Kumbali inayi, Mtundu woyera siidagwirizane ndi chiwerewere. Imadziwonetsera yokha mosasamala jenda. Pachifukwa ichi mphaka imatha kukhala ndi mitundu yonse itatu. Chifukwa ali ndi ma chromosomes awiri ndipo yoyera idawonekeranso.
kuphatikiza
Kutengera mphatso ya chromosomal yomwe munthuyo amalandila, mtundu wina kapena wina udzawonekera. Mdima wakuda ndi lalanje amalembedwa pa chromosome yomweyo, ngati X0 ilipo mphaka amakhala walanje ngati Xo adzakhala wakuda. Pankhani ya X0Xo, imodzi mwa majini ikakhala yosagwira, imayambitsa mawonekedwe atatu.
Akazi akhoza kulandira mitundu itatu:
- X0X0: khanda lalanje
- X0Xo: tricolor paka
- XoXo: mphaka wakuda
Amuna ali ndi awiri okha:
- X0Y: mphaka wa lalanje
- XoY: mphaka wakuda
White imadziwika ndi mtundu wa W (zoyera) ndikudziwonetsera palokha. Chifukwa chake mutha kuphatikiza ndi mitundu ina. Pali amphaka akuda ndi oyera, lalanje ndi oyera komanso amphaka oyera okha.
Mitundu ya amphaka atatu
M'kati mwa amphaka atatu muli mitundu ingapo. zimasiyana kokha molingana ndi zoyera kapena mtundu wa tsitsi:
- mphaka wa calico kapena amphaka aku Spain: Amphaka amenewa amakhala oyera pamimba, pamiyendo, pachifuwa ndi pachibwano. Ali ndi zigamba zakuda ndi lalanje pakhungu lawo. Mdima nthawi zambiri umameta imvi. M'chithunzichi timawona mphaka wamtunduwu.
- mphaka carey kapena kamba: Mitundu imasakanizidwa asymmetrically. White imasowa. Mitundu nthawi zambiri imasungunuka ndimayendedwe opepuka. Black wakula.
- mphaka tricolor: Ndiko kugawikana pakati pa zomwe tatchulazi. Njirayi ndi yolimba ndi mitundu itatu.
Kodi pali amphaka amphongo atatu?
Inde. Amphaka a tricolor alipo, ngakhale kuti zimachitika kawirikawiri. Ndi chifukwa cha chromosomal anomaly. Amphakawa m'malo mokhala ndi ma chromosomes awiri ogonana (XY) amakhala ndi atatu (XXY). Chifukwa ali ndi ma chromosome awiri a X, amatha kupereka zakuda ndi lalanje ngati zazimayi.
wodziwika kuti Klinefelter Matenda ndipo nthawi zambiri zimayambitsa kusabereka. Ndi matenda osazolowereka omwe amatsutsa nthano kuti amphaka onse a tricolor ndi akazi. Koma chifukwa ndizopanda pake, titha kunena kuti nthawi zonse amphaka amtundu wa tricolor nthawi zambiri amakhala achikazi.
Pitirizani kusaka Katswiri wa Zanyama kuti mudziwe zambiri za amphaka:
- kusamalira mphaka
- Kutentha kwa mphaka - zizindikiro ndi chisamaliro
- Mitengo ya poizoni yamphaka ndi iti
