Obidov Muhammadjon $Alijonov Abdulbosid
Murojaat uchun tel:+998901626296
7.Aa Bb Dd Ccee 2va 3 oraliq formada bolsa ularni o'zaro chatishtirsa fenotip va genotip
nisbatlarni toping
Javob:36:81
8.Shimpanze gemoglabinida DNK ni uzunligi qancha boladi
Yechim:
shimpanzening a zanjiri ham b zanjiri ham 2ta dan
hisoblanadi
A zanjirining har birida —141ta B zanjirining har birida -----146ta aminokislata bor
141*2=282 a zanjirdagi
jami aminokislata
146*2=292 b zanjiridagi jami aminokislata
282+292=574 jami aminokislata
1ta aminokislata--------------------3ta nukleotid
574ta aminokislata------------------x=1722ta i-RNK dagi nukleotid
i-RNK va DNK uzunligi o’zaro teng bo’ladi
1ta nukleotid--------0,34nm
1722 ta nukleotid---x=585,48nm
Javob:585,48
9.Ma'lum bir o'simlikda 200ta mikrospora bor.Ulardan hosil bo'lgan spermiylarning 18% i qo'sh
urug'lanishda qatnashdi.Hosil bo'lgan murtakdagi autosomalar soni 648ta bo'lsa urug'lanishda qatnashmagan
spermiylardagi autosamalar sonini toping.
Yechimi:
1ta mikrospora----------2ta spermiy
200ta mikrospora--------x=400ta spermiy
100%--------400ta spermiy
18%-----------x=72ta spermiy
72tani yarmi murtak,yarmi esa endosperm hosil qiladi
72:2=36ta murtak Murak to’plami 2n
36ta murtakda------648ta autosoma
1tasida esa-----------x=18ta autosoma
18ta autosom+2ta jinsiy xromosoma=20ta jami xromosoma
2n=20 n=10ga
Jami 400ta spermiy 72tasi uruglanishda ishtirok
etgan
400-72=328ta ishtirok
etmagan
1ta spermiyda-----9ta autosoma
328ta spermiyda----x=2952
Javob:2952
10.6 ta urug’ hosil bo’lishida qatnashgan a) urug’kurtakalar b) spernmiylar c)
tuxum hujayralar sonini
toping?