Principles of Inheritance
Law of Independent Assortment
Jab tum do genes ko saath follow karte ho, to har pair apne aap alag hoti hai. Ek pair doosre par depend nahi karti.
Seed colour aur seed shape ko saath follow karo. Colour gene gamete me jaata hai bina is baat par depend kiye ki uske saath kaunsa shape allele jaata hai. Isliye ek parent jiske paas yellow-round aur green-wrinkled hai, wo naye mixes bhi bana sakta hai, jaise yellow-wrinkled.
Yahi free mixing dihybrid cross me 9 : 3 : 3 : 1 ratio deti hai, aur isiliye offspring dono parents se alag dikh sakte hain.
Yahaan students galti karte hain
Ye tabhi chalta hai jab do genes alag chromosomes par hon, ya ek hi chromosome par door-door. Jo genes paas-paas hote hain wo aksar ek set ki tarah saath chalte hain, aur 9 : 3 : 3 : 1 toot jaata hai. To ye rule unlinked genes ke liye hai, har pair ke liye nahi.
Yaad rakho
Har gene pair apne aap alag hoti hai. Ek doosre ko decide nahi karti.
Ek quick check
Law of independent assortment sabse cleanly tab chalta hai jab do genes:
- AEk hi chromosome par, paas-paas hon
- BAlag chromosomes par hon
- CDono recessive hon
- DDono dominant hon