1. Biologiyadan masala va mashqlar yechishning yo’lga qo’yishning qanday ijobiy tomonlari mavjud?

A) Aa x Aa V) Aa x aa S) AA x AA D) aa x aa
106. 9:3:3:1 nisbat quyidagilarning qaysi birida amalga oshadi?
A) AAVV x aavv V) AaVv x aavv S) AaVv x AaVv D) AaVv x Aavv
107. 27:9:9:9:3:3:3:1 nisbat quyidagi chatishtirishlarning qaysi birida namoyon bo’ladi?
A) AaVv SS x aavvss V) AAVVSS x aavvss
S) AAVvSs x AaVvSS D) AaVvSs x AaVvSs
108. AaVv x aavv genotipli organizm o’zaro chatishtirilsa qanday genotipli duragaylar hosil bo’ladi?
A) AaVv, Aavv, aaVv, aavv V) AaVv, AAvv, AaVv, aavv
S) AaVv, AaVv, aaVv, Aavv D) AAVV, Aavv, aaVv, AaVv
6. 1:1:1:1 nisbab quyidagilarning qaysi birida amalga oshadi?
A) AAVV x aavv V) AaVv x aavv S) AaVv x AaVv D) AaVv x Aavv
109. 1:1:1:1:1:1:1:1 nisbat quyidagilarning qaysi birida namoyon bo’ladi?
A) AaVv x AaVv V) AaVvSS x aavvss
S) AaVvSs x aavvss D) AaVvSs x Aavvss
110. Digeterozigota kulrang tana normal qanotli drozofila qoramtir tana kalta qanotli drozofila bilan chatishtirilsa nisbat foiz jixatdan qanday bo’lgan?
A) 25%: 25% : 25% : 25% V) 35% : 35% : 15% :15%
S) 41.5%: 41.5%: 8.5%:8.5% D) 42%:42%:8%:8%
111. Daltonik ayol bilan sog’lom yigit nikoxidan (X ^d X^d X^DU ) qanday farzandlar tug’ilishi mumkin?
A) X^DX^d , X^d Y, X^dX^d , X^D Y V) X^DX^d , X^d Y
S) X^dX^d , X^D Y D) X^d Y, X^dX^d
112. Komplementar irsiylanishda fenotip jixatdan nisbat qanday bo’ladi?
1- 9:7 2- 9:6:1 3- 9:3:4 4- 13:3 5-12:3:1 6- 9:3:3:1 7- 1:4:6:4:1
A) 1.2.3.6 V) 1.3.5.6 S) 4.5 D) 7
113. Polimer irsiylanishda fenotip jixatdan nisbat qanday bo’ladi?
1- 9:7 2- 9:6:1 3- 9:3:4 4- 13:3 5-12:3:1 6- 9:3:3:1 7- 1:4:6:4:1
A) 1.2.3.6 V) 1.3.5.6 S) 4.5 D) 7
114. Epistazda fenotip jixatdan nisbat qanday bo’ladi?
1- 9:7 2- 9:6:1 3- 9:3:4 4- 13:3 5-12:3:1 6- 9:3:3:1 7- 1:4:6:4:1
A) 1.2.3.6 V) 1.3.5.6 S) 4.5 D) 7
4. Odamdagi retsessiv belgilarni toping.
1- jingalak soch 2- to’g’ri soch 3-qora soch 4-malla soch 5- sepkil bo’lishi 6- ko’kko’z 7- pakanalik 8- normal bo’y
A) 1.3.5.7 V) 1.3.4.8 S) 2.4.6.8 D) 2.5.6.7.8
115. Fenilketonuriya yangi tug’ilgan chaqaloqlarning ... tasidan bittasida uchraydi?
A) 400 V) 800 S) 10000 D) 1200
116. Klaynfelьter sindromi uchun xos belgilarni toping.
1- qo’l oyoklar uzun 2- bo’yi juda past 3- yelka chanoqqa nisbtan tor 4-tuxumdon rivojlanmagan 5- ikkilamchi jinsiy belgilar rivojlanmagan 6- skelet tuzilishi ayollarnikiga o’xshash