Spermatogenezga mos keiuvchi javiblarni toping. otgan, ikkinchi hujayr

A) 10 B)5 C)13 D) 23 145. (v20/21-113-23) Spermatogenezning osish davri oxirida bitta xromosomadagi DNK ning yetiiish davri oxiridagi shu xromosomadagi DNK ga nisbati qanday * bolishini aniqlang, A) 4:1
B) 2:1 C)1:2 D) 2:2 146. (v20/21-119-14) Hayvonlar jinsiy bezlarida kechadigan gametogenezning qaysi bosqichida tuxum hujayralarda bittadan ortiq spermatozoidning kirishiga yol qoymaydigan qoshimcha qobiq hosil boiadi. A) osish B) kopayish
C) yetiiish D) shaklianish 147. (v20/21-122-15) Tovuskozda ovogenez jarayonida kuzatiladigan hodisalar qaysi javobda togri berilgan? 1) kopayish davrida reduplikatsiya sodir boiadi; 2) 4 ta gaploid toplamga ega hujayra hosil boiadi; 3) hujayralarning 50%i jinsiy Y xromosomaga ega; 4) osish davrida hujayralarda translyatsiya kuzatilmaydi; 5) hujayralarning barchasi jinsiy X xromosomaga ega boiadi; 6) kopayish davrida diploid toplamga ega hujayralar hosil boiadi. A) 2, 4 B) 1, 5 C) 4, 5 D) 3, 6 148. (v20/21-127-1) Sariq donli geterozigota noxat osimligining urugchisida meyoz I jarayonida murtak xalta rivojlanadigan hujayraga, dominant gen otdi. Agar shu murtak xaltadagi hujayralarni uruglantirishda retsessiv genga ega spermiylar ishtirok etsa, avlodda qanday fenotipli donlar hosil boiadi? A) faqat yashil donli osimliklar olinadi B) 75% sariq, 25% yashil donli osimliklar olinadi C) faqat sariq donli osimliklar olinadi D) 50% sariq, 50% yashil donli osimliklar olinadi 149. (v20/21-128-3) Partenogenezga tegishli ma’lumotlar qaysi javobda berilgan? 1) asalarilarda uruglangan tuxum hujayradan urgochi ari rivojlanadi; 2) tabiiy va sun’iy xillari mavjud; 3) trutenlar uruglanmagan tuxum hujayradan rivojlanadi; 4) uruglangan baqa tuxum hujayrasiga nina bilan ta’sir etilsa undan rivojlangan barcha individlar urgochi jinsli boiadi; 5) sun’iy partenogenez usuli yordamida erkak jinsli ipak qurtlari yaratilgan; 6) chumoli va chuvalchanglarda kuzatilmaydi. A) 2, 4 B) 1, 2, 3, 5 C)3, 5 D) 2, 3, 5 i 150. (v20/21-129-26) Meyoz jarayonida xromosomalar toplami holatlari qanday ketma - ketlikda namoyon boiadi 1) bir xromatidali xromosomalarning tetraploid toplami; 2) bir xromatidali xromasomalarning diploid toplami; 3) bir xromatidali xromosomalarning gaploid toplami; 4) ikki xromatidali xromosomalarning gaploid toplam; 5) ikki xromatidali xromosomalarning diploid toplam. A) 5, 2, 3, 5, 1 B) 5, 2, 3,4, 1 C)3, 2, 5, 1,4 D) 2, 5, 4, 2,3 151. (v20/21-131-6) Soglom odamda quyidagi jarayonlarning qaysi birida xromatidalar tetradasi kuzatiladi? A) meyoz profaza II da B) spermatogenez osish zonasida C) gametogenezning yetiiish zonasida D) gametogenezning kopayish zonasida 152. (V20/21 -132-5) Soglom odamda xromatidalar tetradasi qachon kuzatiladi? A) meyozning profaza II da B) gametogenezning kopayish zonasida C) spermatogenezning yetiiish zonasida D) spermatogenezning osish zonasida 153. (v20/21 -134-20) Kopayishning qaysi turida avlodlar orasidagi boglanish gametalar orqali namoyon boiadi? A) shozogoniya B) sporalar bilan kopayish C) partenogenez D) vegetiv kopayish 154. (v20/21-135-6) Tuxum hujayraning boshqa hujayralardan farqi? A) sariqlik miqdorining kopligi B) qobigining qalinligi C) kopayishda ishtirok etishi D) barcha javoblar togri 155. (v20/21 -135-28) Makkajoxori hujayralarida meyoz jarayonini buzulishi oqibatida ikkinchi va beshinchi juft xromosomalar tarqalmasdan, bitta qutbga otishdi. Shu spermiylar ishtirokida hosil bolgan endospermlarda nechta xromosoma boiadi? A) 19 yoki 21 B) 18 yoki 22 C) 28 yoki 32 D) 29 yoki 31 156. (v20/21-137-16) Makkajoxoridan 560 ta urug olindi. Shu uruglarni hosil bolishida nechta spermiy ishtirok etgan? A) 140 B)280 C)420 D)1120 157. (v20/21 -138-13) Zogora baliq ovogenez jarayoni profaza I da gomologik xromosomalar orasida konyugatsiya kuzatildi. Shu jarayonda nechta xromatidalar tetradasi hosil boiadi? A) 26 B) 104 C) 52 D) 13 158. (v20/21 -138-20) Ovagenezning spermatogenezdan uzoq davom etishiga nima sabablar boiadi. A) kopayish davri uzoq davom etadi B) osish davri uzoq davom etadi C) yetiiish davri uzoq davom etadi D) shaklianish davri uzoq davom etadi 159. (v20/21-139-19) Spermotogenezning kopayish davridagi hujayralar qanday nomlanadi. A) spermotogoniy B) birinchi tartibli spermototsit C) ikkinchi tartibli spermototsit D) spermatida 160. (v20/21-140-6) Gametogenezning shaklianish davrida hujayralarda xromosoma toplami qay holatda boiadi. A) 2n, 2c B) n, 2c C) 2n, 4c D) n, c 161. (v20/21-140-12) Soglom odamda quyidagi jarayonlarning qaysi birida xromatidalar tetradasi kuzatiladi? A) meyoz profaza II da B) spermatogenez osish zonasida C) gametogenezning yetiiish zonasida D) gametogenezning kopayish zonasida 162. (v20/21-140-17) Jinssiz kopayish kop hujayralilarda qanday turlari uchraydi? 1) binary; 2) vegetativ; 3) shizogoniya; 4) sporalar; 5) kurtaklanish; 6) fragmentlar; 7) poliembrional. A) 1,3, 4, 5 B) 2, 3,6, 7 C) 2, 4, 5, 6, 7 D) 1, 3, 5, 6 163. (v20/21-142-23) Meyozning qaysi bosqichida gomologik xromosomalarning yelkalari bir-biridan aniq ajraladi, lekin xromatidlar ajralmagan holda qutblarga tarqaladi? A) anafaza, I B) profaza, II C) telofaza, I D) metafaza, II 164. (V20/21 -143-21) Ovogenez jarayonida gomologik xromosomalarning bir jufti ajralmasdan bir qutbga otdi. Agar spermotozoid shu gameta bilan qoshilsa, qanday hodisa kuzatiladi? A) nuqson tufayli uruglanish kuzatilmaydi B) Klaynfelter sindromli bola tugiladi C) xromosoma toplami 48 bolgan avlod tugiladi D) bola 46 ta xromosomaga ega boiadi va rivojlanishi normal kechadi 165. (v20/21-143-23) Meyozning profaza 1 bosqichida yuz beradigan hodisa qanday nomlanadi? A) kooperatsiya B) korrelyatsiya C) konvergensiya D) krossingover 166. (v20/21 -144-1) Karamning diploid navida (n = 9) meyoz jarayonida 2 juft xromosoma qutblarga notekis taqsimlandi. Yangi hujayralardagi xromosomalar sonini aniqlang? A) 11 yoki 7 B) 10 yoki 18 C) 28 yoki 26 D) 10 yoki 8 A) 1 - osish davri, spermatagoniy, 2n2c; 2 — yetiiish davri, birlamchi spermatotsit,
D) 23 145. (v20/21-113-23) Spermatogenezning osish davri oxirida bitta xromosomadagi DNK ning yetiiish davri oxiridagi shu xromosomadagi DNK ga nisbati qanday * bolishini aniqlang, A) 4:1 B) 2:1 C)1:2 D) 2:2 146. (v20/21-119-14) Hayvonlar jinsiy bezlarida kechadigan gametogenezning qaysi bosqichida tuxum hujayralarda bittadan ortiq spermatozoidning kirishiga yol qoymaydigan qoshimcha qobiq hosil boiadi. A) osish B) kopayish C) yetiiish D) shaklianish 147. (v20/21-122-15) Tovuskozda ovogenez jarayonida kuzatiladigan hodisalar qaysi javobda togri berilgan? 1) kopayish davrida reduplikatsiya sodir boiadi; 2) 4 ta gaploid toplamga ega hujayra hosil boiadi; 3) hujayralarning 50%i jinsiy Y xromosomaga ega; 4) osish davrida hujayralarda translyatsiya kuzatilmaydi; 5) hujayralarning barchasi jinsiy X xromosomaga ega boiadi; 6) kopayish davrida diploid toplamga ega hujayralar hosil boiadi. A) 2, 4 B) 1, 5 C) 4, 5 D) 3, 6 148. (v20/21-127-1) Sariq donli geterozigota noxat osimligining urugchisida meyoz I jarayonida murtak xalta rivojlanadigan hujayraga, dominant gen otdi. Agar shu murtak xaltadagi hujayralarni uruglantirishda retsessiv genga ega spermiylar ishtirok etsa, avlodda qanday fenotipli donlar hosil boiadi? A) faqat yashil donli osimliklar olinadi B) 75% sariq, 25% yashil donli osimliklar olinadi C) faqat sariq donli osimliklar olinadi D) 50% sariq, 50% yashil donli osimliklar olinadi 149. (v20/21-128-3) Partenogenezga tegishli ma’lumotlar qaysi javobda berilgan? 1) asalarilarda uruglangan tuxum hujayradan urgochi ari rivojlanadi; 2) tabiiy va sun’iy xillari mavjud; 3) trutenlar uruglanmagan tuxum hujayradan rivojlanadi; 4) uruglangan baqa tuxum hujayrasiga nina bilan ta’sir etilsa undan rivojlangan barcha individlar urgochi jinsli boiadi; 5) sun’iy partenogenez usuli yordamida erkak jinsli ipak qurtlari yaratilgan; 6) chumoli va chuvalchanglarda kuzatilmaydi. A) 2, 4 B) 1, 2, 3, 5 C)3, 5 D) 2, 3, 5 i 150. (v20/21-129-26) Meyoz jarayonida xromosomalar toplami holatlari qanday ketma - ketlikda namoyon boiadi 1) bir xromatidali xromosomalarning tetraploid toplami; 2) bir xromatidali xromasomalarning diploid toplami; 3) bir xromatidali xromosomalarning gaploid toplami; 4) ikki xromatidali xromosomalarning gaploid toplam; 5) ikki xromatidali xromosomalarning diploid toplam. A) 5, 2, 3, 5, 1 B) 5, 2, 3,4, 1 C)3, 2, 5, 1,4 D) 2, 5, 4, 2,3 151. (v20/21-131-6) Soglom odamda quyidagi jarayonlarning qaysi birida xromatidalar tetradasi kuzatiladi? A) meyoz profaza II da B) spermatogenez osish zonasida C) gametogenezning yetiiish zonasida D) gametogenezning kopayish zonasida 152. (V20/21 -132-5) Soglom odamda xromatidalar tetradasi qachon kuzatiladi? A) meyozning profaza II da B) gametogenezning kopayish zonasida C) spermatogenezning yetiiish zonasida D) spermatogenezning osish zonasida 153. (v20/21 -134-20) Kopayishning qaysi turida avlodlar orasidagi boglanish gametalar orqali namoyon boiadi? A) shozogoniya B) sporalar bilan kopayish C) partenogenez D) vegetiv kopayish 154. (v20/21-135-6) Tuxum hujayraning boshqa hujayralardan farqi? A) sariqlik miqdorining kopligi B) qobigining qalinligi C) kopayishda ishtirok etishi D) barcha javoblar togri 155. (v20/21 -135-28) Makkajoxori hujayralarida meyoz jarayonini buzulishi oqibatida ikkinchi va beshinchi juft xromosomalar tarqalmasdan, bitta qutbga otishdi. Shu spermiylar ishtirokida hosil bolgan endospermlarda nechta xromosoma boiadi? A) 19 yoki 21 B) 18 yoki 22 C) 28 yoki 32 D) 29 yoki 31 156. (v20/21-137-16) Makkajoxoridan 560 ta urug olindi. Shu uruglarni hosil bolishida nechta spermiy ishtirok etgan? A) 140 B)280 C)420 D)1120 157. (v20/21 -138-13) Zogora baliq ovogenez jarayoni profaza I da gomologik xromosomalar orasida konyugatsiya kuzatildi. Shu jarayonda nechta xromatidalar tetradasi hosil boiadi? A) 26 B) 104 C) 52 D) 13 158. (v20/21 -138-20) Ovagenezning spermatogenezdan uzoq davom etishiga nima sabablar boiadi. A) kopayish davri uzoq davom etadi B) osish davri uzoq davom etadi C) yetiiish davri uzoq davom etadi D) shaklianish davri uzoq davom etadi 159. (v20/21-139-19) Spermotogenezning kopayish davridagi hujayralar qanday nomlanadi. A) spermotogoniy B) birinchi tartibli spermototsit C) ikkinchi tartibli spermototsit D) spermatida 160. (v20/21-140-6) Gametogenezning shaklianish davrida hujayralarda xromosoma toplami qay holatda boiadi. A) 2n, 2c B) n, 2c C) 2n, 4c D) n, c 161. (v20/21-140-12) Soglom odamda quyidagi jarayonlarning qaysi birida xromatidalar tetradasi kuzatiladi? A) meyoz profaza II da B) spermatogenez osish zonasida C) gametogenezning yetiiish zonasida D) gametogenezning kopayish zonasida 162. (v20/21-140-17) Jinssiz kopayish kop hujayralilarda qanday turlari uchraydi? 1) binary; 2) vegetativ; 3) shizogoniya; 4) sporalar; 5) kurtaklanish; 6) fragmentlar; 7) poliembrional. A) 1,3, 4, 5 B) 2, 3,6, 7 C) 2, 4, 5, 6, 7 D) 1, 3, 5, 6 163. (v20/21-142-23) Meyozning qaysi bosqichida gomologik xromosomalarning yelkalari bir-biridan aniq ajraladi, lekin xromatidlar ajralmagan holda qutblarga tarqaladi? A) anafaza, I B) profaza, II C) telofaza, I D) metafaza, II 164. (V20/21 -143-21) Ovogenez jarayonida gomologik xromosomalarning bir jufti ajralmasdan bir qutbga otdi. Agar spermotozoid shu gameta bilan qoshilsa, qanday hodisa kuzatiladi? A) nuqson tufayli uruglanish kuzatilmaydi B) Klaynfelter sindromli bola tugiladi C) xromosoma toplami 48 bolgan avlod tugiladi D) bola 46 ta xromosomaga ega boiadi va rivojlanishi normal kechadi 165. (v20/21-143-23) Meyozning profaza 1 bosqichida yuz beradigan hodisa qanday nomlanadi? A) kooperatsiya B) korrelyatsiya C) konvergensiya D) krossingover 166. (v20/21 -144-1) Karamning diploid navida (n = 9) meyoz jarayonida 2 juft xromosoma qutblarga notekis taqsimlandi. Yangi hujayralardagi xromosomalar sonini aniqlang? A) 11 yoki 7 B) 10 yoki 18 C) 28 yoki 26 D) 10 yoki 8 A) 1 - osish davri, spermatagoniy, 2n2c; 2 — yetiiish davri, birlamchi spermatotsit, 2n4c; 3 - kopayish davri, spermatida, 1 n2c B) 2 - osish davri, birlamchi spermatotsit, 2n4c; 3 - yetiiish davri, ikkilamchi spermatotsit, 1n2c; 4 - spermatida, 1n1c C) 1 - kopayish davri, spermatagoniy, 2n2c; 2 - yetiiish davri, birlamchi spermatotsit, 2n4c; 3- shaklianish davri, spermatida, 1n2c D) 1 - kopayish davri, spermatagoniy, 2n2c; 2 - osish davri, birlamchi spermatotsit, 2n4c; 3 - yetiiish davri, spermatida, 1n2c