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Video: DNK molekulasida nechta nukleotid bor?
![Video: DNK molekulasida nechta nukleotid bor? Video: DNK molekulasida nechta nukleotid bor?](https://i.ytimg.com/vi/6X_98ap0e2c/hqdefault.jpg)
2024 Muallif: Miles Stephen | [email protected]. Oxirgi o'zgartirilgan: 2023-12-15 23:41
to'rt nukleotid
Shu munosabat bilan DNK molekulasida nechta asos jufti mavjud?
Gaploid inson genomi (23 xromosoma) taxminan 3,2 mlrd. asoslar uzun va 20 000-25 000 ta aniq protein kodlovchi genlarni o'z ichiga oladi. Kilobaza (kb) - bu o'lchov birligi molekulyar biologiya 1000 ga teng tayanch juftliklar ning DNK yoki RNK.
Xuddi shunday, DNKning eng kichik birligi nima deb ataladi? nukleotid
Shunday qilib, xromosomada nechta nukleotid bor?
Har bir xromosomada bitta juda uzun chiziqli DNK molekulasi mavjud. Insonning eng kichik xromosomalarida bu DNK molekulasi taxminan 50 million juft nukleotiddan iborat; eng katta xromosomalar ba'zilarini o'z ichiga oladi 250 million nukleotid juftliklar.
DNK oqsilmi?
Yo'q, DNK a emas oqsil . Farqi shundaki, ular turli xil subbirliklardan foydalanadilar. DNK polinukleotiddir, oqsil polipeptiddir (peptid bog'lari aminokislotalarni bog'laydi). DNK qattiq disk kabi uzoq muddatli ma'lumotlar do'koni, esa oqsillar robot qo'llari kabi molekulyar mashinalar.
Tavsiya:
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Ko'pgina diploid hujayralardagi yadrolar sonining taqsimlanishi har bir yadroda ikki yoki uchta yadro va 1 dan 6 gacha bo'lgan nukleolalar rejimini ko'rsatdi
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Tarjima roli Har bir kodon ma'lum bir aminokislotani anglatadi, shuning uchun agar mRNKdagi xabar 300 ta kodonga to'g'ri keladigan 900 nukleotid uzunlikda bo'lsa, u 300 ta aminokislotadan iborat zanjirga aylanadi
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