K. S. Sodiqova Mirzo Ulug’bek nomidagi O’zbekiston
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K. S. Sodiqova Mirzo Ulug’bek nomidagi O’zbekiston-fayllar.org
100-masala*. G’o’za o’simligida qo’ng’ir tola (FrBr) oq tola (Frbr) ustidan, o’simlikning antotsian rangi (Rp) yashil rangi (rp) ustidan, barg plastinkasining panjasimon-kesik (Ol) shakli panjasimon-bo’linma (ol) shakli ustidan to’liqsiz dominantlik qiladi.
Har uchchala belgi bo’yicha dominant gomozigotali g’o’za o’simliklari har uchchala belgi bo’yicha retsessiv gomozigotali g’o’zalar bilan chatishtirilib, F1 da novvot rang tolali, o’simliklari oraliq rangli va barg plastinkasi panjasimon-bo’lakli bo’lgan duragaylar olindi. F1 duragaylarini o’z-o’zi bilan chatishtirib F2 duragaylari olindi. F2 duragaylarida o’rganilayotgan belgilar bo’yicha qanday ajralish sodir bo’ladi? Olingan F1 duragaylari har uchchala belgi bo’yicha dominant va retsessiv gomozigota ota-ona bilan qayta chatishtirilsa, FB da qanday ajralish sodir bo’ladi? Masalaning yechilishi: Belgi Gen Tolaning qo’ng’ir rangi FrBr Tolaning oq rangi Frbr O’simliklarning antotsian rangi Rp O’simliklarning yashil rangi rp Barg plastinkasining panjasimon kesik shakli Ol Barg plastinkasining panjasimon bo’linma shakli ol qo’ng’ir tola, antotsian rang, oq tola, yashil rang, panjasimon kesik panjasimon bo’linma P ♀ FrBrFrBr RpRp OlOl X ♂ FrbrFrbr rprp olol g FrBr Rp Ol Frbr rp ol F1 FrBrFrbr Rprp Olol - novvot rang tolali, o’simligi oraliq rangli, bargi panjasimon bo’lakli novvot rang tolali, oraliq novvot rang tolali, oraliq rangli, panjasimon bo’lakli rangli, panjasimon bo’lakli P ♀ FrBrFrbr Rprp Olol X ♂ FrBrFrbr Rprp Olol g FrBr Rp Ol FrBr Rp Ol FrBr Rp ol FrBr Rp ol FrBr rp Ol FrBr rp Ol Frbr Rp Ol Frbr Rp Ol FrBr rp ol FrBr rp ol Frbr Rp ol Frbr Rp ol Frbr rp Ol Frbr rp Ol Frbr rp ol Frbr rp ol F2 1. FrBrFrBr RpRp OlOl = 1 qo’ng’ir tola, antotsian, panjasimon-kesik 2. FrBrFrBr RpRp Olol = 2 qo’ng’ir tola, antotsian, panjasimon-bo’lakli 3. FrBrFrBr Rprp OlOl = 2 qo’ng’ir tola, oraliq rang, panjasimon-kesik 4. FrBrFrbr RpRp OlOl = 2 novvot rang tola, antotsian, panj. -kesik 5. FrBrFrbr Rprp OlOl = 4 novvot rang tola, oraliq rang, panj.- kesik 6. FrBrFrbr RpRp Olol = 4 novvot rang tola, antotsian, panj. -bo’lakli 7. FrBrFrBr Rprp Olol = 4 qo’ng’ir tola, oraliq rang, panj. -bo’lakli 8. FrBrFrbr Rprp Olol = 8 novvot rang tola, oraliq rang, panj.-bo’lakli 9. FrBrFrBr RpRpolol = 1 qo’ng’ir tola, antotsian, panj. -bo’linma 10. FrBrFrBr Rprp olol = 2 qo’ng’ir tola, oraliq rang, panj. -bo’linma 11. FrBrFrbr RpRp olol = 2 novvot rang tola, antotsian, panj. -bo’linma 12. FrBrFrbr Rprp olol = 4 novvot rang tola, oraliq rang, panj.-bo’linma 13. FrBrFrBr rprp OlOl = 1 qo’ng’ir tola, yashil, panjasimon -kesik 14. FrBrFrbr rprp OlOl = 2 novvot rang tola, yashil, panjasimon-kesik 15. FrBrFrBr rprp Olol = 2 qo’ng’ir tola, yashil, panjasimon-bo’lakli 16. FrBrFrbr rprp Olol = 4 novvot rang tola, yashil, panjasimon-bo’lakli 17. FrbrFrbr RpRp OlOl = 1 oq tola, antotsian, panjasimon-kesik 18. FrbrFrbr Rprp OlOl = 2 oq tola, oraliq rang, panjasimon-kesik 19. FrbrFrbr RpRp Olol = 2 oq tola, antotsian, panjasimon-bo’lakli 20. FrbrFrbr Rprp Olol = 4 oq tola, oraliq rang, panjasimon-bo’lakli 21. FrBrFrBr rprp olol = 1 qo’ng’ir tola, yashil, panjasimon-bo’linma 22. FrBrFrbr rprp olol = 2 novvot rang tola, yashil , panj. -bo’linma 23. FrbrFrbr RpRp olol = 1 oq tola, antotsian, panjasimon -bo’linma 24. FrbrFrbr Rprp olol = 2 oq tola, oraliq rang, panjasimon -bo’linma 25. FrbrFrbr rprp OlOl = 1 oq tola, yashil, panjasimon -kesik 26. FrbrFrbr rprp Olol = 2 oq tola, yashil, panjasimon-bo’lakli 27. FrbrFrbr rprp olol = 1 oq tola, yashil, panjasimon-bo’linma. Har uchchala belgi bo’yicha to’liqsiz dominantlik hodisasi kuzatilganda fenotipik va genotipik sinflarning soni bir xil bo’lib, 27 taga teng bo’ladi. F1 duragaylari dominant gomozigotali ota-ona bilan chatishtirilganda: novvot rang tolali, oraliq qo’ng’ir tolali, antotsian, rangli, panjasimon bo’lakli panjasimon kesik P ♀ FrBrFrbr Rprp Olol X ♂ FrBrFrBr RpRp OlOl g FrBr Rp Ol FrBr Rp Ol FrBr Rp ol FrBr rp Ol Frbr Rp Ol FrBr rp ol Frbr Rp ol Frbr rp Ol Frbr rp ol FB 1. FrBrFrBr RpRp OlOl - qo’ng’ir tola, antotsian, panjasimon kesik 2. FrBrFrBr RpRp Olol - qo’ng’ir tola, antotsian, panjasimon bo’lakli 3. FrBrFrBr Rprp OlOl - qo’ng’ir tola, oraliq rang, panjasimon kesik 4. FrBrFrbr RpRp OlOl - novvot rang tola, antotsian, panj. kesik 5. FrBrFrBr Rprp Olol - qo’ng’ir tola, oraliq rang, panj. bo’lakli 6. FrBrFrbr RpRp Olol - novvot rang tola, antotsian, panj. bo’lakli 7. FrBrFrbr Rprp OlOl - novvot rang tola, oraliq rang, panj. kesik 8. FrBrFrbr Rprp Olol - novvot rang tola, oraliq rang, panj.bo’lakli Sakkizta fenotipik sinflar hosil bo’lib, ularning nisbati 1:1:1:1:1:1:1:1. Dominant gomozigotali va geterozigotali organizmlar hosil bo’ladi. F1 duragaylari retsessiv gomozigotali ota-ona bilan chatishtirilganda: novvot rang tolali, oraliq oq tolali, yashil, rangli, panjasimon bo’lakli panjasimon bo’linma P ♀ FrBrFrbr Rprp Olol X ♂ FrbrFrbr rprp olol g FrBr Rp Ol Frbr rp ol FrBr Rp ol FrBr rp Ol Frbr Rp Ol FrBr rp ol Frbr Rp ol Frbr rp Ol Frbr rp ol FB 1. FrBrFrbr Rprp Olol - novvot rang tola, oraliq rang, panj.- bo’lakli 2. FrBrFrbr Rprp olol - novvot rang tola, oraliq rang, panj. -bo’linma 3. FrBrFrbr rprp Olol - novvot rang tola, yashil , panj. -bo’lakli 4. FrbrFrbr Rprp Olol - oq tola, oraliq rang, panj. -bo’lakli 5. FrBrFrbr rprp olol - novvot rang tola, yashil, panj.- bo’linma 6. FrbrFrbr Rprp olol - oq tola, oraliq rang, panj. -bo’linma 7. FrbrFrbr rprp Olol - oq tola, yashil, panjasimon -bo’lakli 8. FrbrFrbr rprp olol - oq tola, yashil, panjasimon -bo’linma. Bu yerda ham sakkizta fenotipik sinflar hosil bo’lib, ularning nisbati 1:1:1:1:1:1:1:1. Geterozigotali va retsessiv gomozigotali organizmlar hosil bo’ladi. Download 300.83 Kb. Do'stlaringiz bilan baham: |
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