Kirish, tirik va jonsiz tabiatning o’xshashligi va farqlari. Ismingiz
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9-sinf savolnoma
Genetika-IV. Ismingiz…………………
1.Zog’ora baliqda birikish guruhida xramasoma soni qancha ?.......................................................................................... 2.Drozofilla meva pashshasining ko’zida pigment bo’lmasligi sabab bo’luvchi boshqa qaysi belgilarga ham ta’sir qiladai?.................................................................................................................................................................................. 3.Sariq junli quyonlarning genotipini belgilang?.................................................................................................................. 4…..orqali irsiylanish qonuniyatlarini o’rganishning ahamiyati juda katta?........................................................................ 5.aaBB yoki aaBb genotipga ega xo’rozlarning toj shakli qanday bo’lishini belgilang?..................................................... 6.Sariq va yashil rangli gomozigota bo’lgan no’xotlarni chatishtirilganda F2 da fenotip jihatda qanday nisbatda ajralishi mumkin.?............................................................................................................................................................................... 7.Sichqonlarda qaysi genotipli letal xususiyatga ega?........................................................................................................ 8.Mutant bu…?...................................................................................................................................................................... 9.Qanday genotipga ega organizmlarda mutatsiya yashirin holda bo’ladi?.......................................................................... 10.Odatda mutatsiyalar organizm uchun … bo’ladi?............................................................................................................ 11.Quyidagilarning qaysi birida xramasomalar soni bir necha yuz barobar ko’payishi mumkin?....................................... 12.Bir juft belgisi bo’yicha geterozigota organizm tahliliy chatishtirishganda fenotip bo’yicha qanday nisbatda xilma-xillik yuzaga keladi?............................................................................................................................................................. 14.Gemofiliya genini tashuvchi genotipni aniqlang?............................................................................................................ 15.Morgan va uning shogirdlari jinsiy xramasomalar orqali jinsni aniqlash b-n birga … nimani aniqladilar?................... 16.Autasomalar sonining o’zgarishi natijasida sodir bo’ladigan irsiy kasalliklarni aniqlang?............................................. 17……ning qayd qilishicha genlar faqat autasomalarda emas, balki jinsiy xarmasomalarda ham joylashgan bo’ladi?.................................................................................................................................................................................. 20.Quyidagi organizmlarning qaysi birida xramasoma miqdori eng kam?.......................................................................... 21.Xramasomalarning genetik kartasida genlarning qanday holati ko’rsatilgan bo’ladi?.................................................... 22.Drozifilladagi jinsiy xramasomalar sonini aniqlang?....................................................................................................... 23.Quyidagilardan qaysi birining jinsiy xramasomasi X ni o’zidan iborat?......................................................................... 24.Quyidagilardan qaysi birida urg’ochisining jinsi geterogametali bo’ladi?...................................................................... 25.Drazofilada qaysi belgi jinsga bog’liq holda irsiylanadi?................................................................................................ 26.Sariq junli ota-ona sichqonlar chatishtirilganda, ulardagi miqdoriy nisbati qanday bo’ladi?.......................................... 27.Sariq dominat gomozigotali sichqonlar qachon nobud bo’ladi?...................................................................................... 28…..mutatsiyalar shu organizmning belgilarininig namoyon bo’lishiga ta’sir qilmaydi, u faqat keyingi bo’g’inlarda namoyon bo’ladi?.................................................................................................................................................................. 29.Qaysi mutatsiyalar genlarning o’zaro ta’sir xarakterini o’zgartiradi?............................................................................. 30….mutatsiyalari xramasomalarning ma’lum bir qismining yo’qolishi tufayli vujudga keladi?....................................... 31.Qaysi mutatsiya natijasida poliploid, zanjiridagi aminokislotalarning ketma-ketligi yangilanadi?................................ 32.Qaysi mutatsiyalar genlarning o’zaro xarakterini o’zgartiradi?...................................................................................... 33.Somatik mutatsiyalarning qaysi biri keyingi avlodlarga o’tadi?...................................................................................... 34.Qaysi mutatsiyalar genlar muvozanatining buzilishiga va organizm rivojlanishining buzilishiga olib keladi?.............. 35.O’simlikshunoslikda qaysi hodisadan keng foydalinadi?................................................................................................ 36.Reaksiya normasining torligi…kabi muhim belgilarga xosdir?...................................................................................... 37.Quyidagilardan qaysi biri modifikatsion o’zgaruvchanlikka misol bo’ladi?................................................................... 38.Organizmlardagi patalogik holatning funksional buzilishini aniqlaydigan metodni belgilang?...................................... 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