Mendel ke niyam sirf ek hi gene wale traits ke liye kaam karte hain, jaise chaawal ke daane ka rang. Jab baat aati hain height ya yield jaise polygenic traits ki, toh bahut saare genes mil jate hain aur inheritance pattern itna saaf nahi rehta. Independent assortment bhi linked genes ke kaaran toot jaata hai.
Mere khet mein, moong ki ek variety cross karte waqt seed colour alag-alag nahi hua, balki pod height ke saath hi aaya... jaise dono traits ek saath bandhe the. Isliye ab hum GWAS karte hain, Mendel ke simple models se bahaar.
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