Mitoz. Ismingiz

Meyoz. Ismingiz…………………
1.Meyoz bo’linish qanday organizmlarda kuzatiladi ?......................................................................................................
2.Jinsiy hujayralarning yetilishi ….. deyiladi ?................................................................................................................
3.Meyozning birinchi bo’linish fazalari ichida qaysi biri eng murakkab va uzoq davom etadi?.....................................
4.Xromosomalarning spirallanish darajasi eng yuqori ko’rsatkichga ega bo’lgan faza bu … ?........................................
5.Ko’pincha interkinoz sodir bo’lmay ….. ga ulanib ketadi?...........................................................................................
6.Kanyungatsiyalangan xromosomal o’rtasidagi o’xshash qismlar , genlar almashinuvi qanday nomlanadi?..............
7.Profaza ozirida ….. ?.....................................................................................................................................................
8.Qaysi bo’linish natijasida xromasolar sonining doimiyligi saqlanadi ?.....................................................................
9.Bo’linish urchug’i xromasomaning qaysi qismiga birikadi ?......................................................................................
10.Xromasomalarning tarqalishi …. da turli xil variantlarda amalga oshadi ?............................................................
11.Meyoz oxirida nechta gaploid to’plamli yetuk jinsiy hujayralar ( gametalar ) hosil bo’ladi ?.................................
12.Meyoz natijasida irsiy axbarotning yangi to’plami hosil bolishiga sabab nima ?...................................................
13.Interkinoz davrida …. kuzatilmaydi ?........................................................................................................................
14.Xromatidlarni ajralmagan holda qutblarga tomon harakatlanishi …… kuzatiladi?..................................................
15.Meyozning qaysi fazalarida xuddi mitozdagidek jaroyonlar kuzatiladi ?...............................................................
16.Yadro qobig’i meyozning qaysi fazasida hosil bo’ladi ?............................................................................................
17.Odamda meyozning birinchi bo’linishidan so’ng spermatozoid yoki ovositga 3-ta xromasoma ota organizmdan o’tgan bo’lsa , ona organizmdan qancha xromasoma o’tgan bo’ladi?.....................................................
18.Odamning birlamchi jinsiy hujayralarida nechta xromosoma bo’ladi?.........................................................................
19.Meyoz bo’linish natijsida xromosomalar to’plami qanday o’zgaradi?.........................................................................
20.Konyugatsiya jarayoni meyozning qaysi fazasida amalga oshadi?...............................................................................
21.Odamning birlamchi jinsiy hujayralaridagi xromosomalarning nechtasi ota organizmiga tegishli?............................
22.Xromosomalar soni ikki xissa kamaygan hujayralar qaysi fazada hosil bo’ladi?.........................................................
23.Profaza II va metafaza II da bo’linayotgan hujayralarning xromosoma to’plami qanday bo’ladi?..............................
24.Odamda meyozning birinchi bo’linishidan so’ng spermatosit va ovositlarda qanchadan xromosoma bo’ladi?...........
25.Krossingover hodisasi … da kuzatiladi?.......................................................................................................................
26.Zigota bu … ?................................................................................................................................................................
27.Gulli o’simliklardagi qo’sh urug’lanish hodisasini kim aniqlagan?.............................................................................
28.Gulli o’simliklarda erkak gametalar qayerda yetiladi?..................................................................................................
29.Profaza II va metafaza II mitozdan … bilan farq qiladi?..............................................................................................
30.Chang donasi nechta hujayradan tuzilgan?....................................................................................................................
31.Urug’langan markaziy hujayradan nima rivojlanadi?....................................................................................................
32.Endospermning xromosoma to’plamini aniqlang?.......................................................................................................
33.Ko’pchilik hollarda bitta tuxum hujayrani nechta spermatozoid urug’lantiradi?..........................................................
34.Murtak … dan rivojlanadi?............................................................................................................................................
35.Spermiylarning xromosoma to’plamini aniqlang?.........................................................................................................
36.Xromatidlarning mustaqil xromosomaga aylanishi meyozning qaysi fazasida amalga oshadi?...................................
37.Vegetativ hjayraning funksiyasi berilgan qatorni aniqlang?.........................................................................................
38.Murtak xaltasida qanday hujayralar bo’ladi?.................................................................................................................
39.Chang donachasining generativ hujayrasi qayerda bo’ladi?........................................................................................
40.Gulli o’simliklarning qo’sh urug’lanish jarayonida nechta hujayra ishtirok etadi?......................................................
41.Chang naychalaridan nechtasi tugunchagacha yetib boradi?.........................................................................................
42.Agar odamning, meyozning birinchi bo’linishidan so’ng spermasit va ovositga o’tgan xromsomalardan 12 tasi ota organizmiga taalluqli bo’lsa, nechtasi ona organizmiga tegishli bo’ladi?..........................................................................
43.Agar tuxum hujayraga to’rta spermatozoid kirsa,ularning nechtasi nobud bo’ladi?.....................................................
44.Krossingover hodisasi … lar o’rtasida kuzatiladi?........................................................................................................
45.Gamalogik xramasomalar bir-biridan ajralishi qaysi fazada boshlanib, qaysi fazada tugaydi va ular bir-biridan to’liq ajraladi?.....................................................................................................................................................................
46.Murtak qaysi hujayralarning qo’shilishidan hosil bo’ladi?...........................................................................................
47.Gulli o’simliklarning spermalari qaysi hujayradan hosil bo’ladi?................................................................................
48.Quyidagilardan qaysi birining yadrosi diploid xramasoma to’plamiga ega?...............................................................
49.Qaysi bo’linish tufayli irsiy o’zgaruvchanlik kelib chiqadi?........................................................................................
50.Meyoz natijasida irsiy axborotning yangi to’plami hosil bo’lishiga sabab nima hisoblanadi?....................................
51.Qaysi jarayon natijasida hujayraning diploid to’plami tiklanadi?................................................................................
52.1915-yil …?..................................................................................................................................................................