Arey, mitosis ke char phase hain — prophase, metaphase, anaphase, telophase! Spindle fibres kinetochore se chromosome ke centromere se attach hote hain, anaphase mein sister chromatids alag hote hain, aur last mein cytokinesis se cell divide ho jata hai. Non-disjunction mein chromosomes sahi se nahi alag hote, isliye extra ya missing chromosome wale gametes bante hain.
Ye sab rat raha hoon gym ke billboard ke piche likhke, jab koi member nahi aata... kyunki Maa keh rahi thi, "Padhai kar, warna gym bandh karwa doongi loan ki tension se!
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