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19 votes
Why are all four chromatids different?

User Kalpesh Satasiya
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1 Answer

17 votes
17 votes

Answer:

They differ from both parents and also from each other. This occurs through a number of mechanisms, including crossing-over, the independent assortment of chromosomes during anaphase I, and random fertilization. When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur.

Step-by-step explanation:

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