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Why crossing over is important?...

Why crossing over is important?

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`**` Exchange of segments leads to new gene combinations which plays an important role in evolution.
`**` Studies of crossing over reveal that genes are arranged linearly on the chromosomes.
`**` Genetic maps are made based on the frequency of crossing over.
`**` Crossing over helps to understand the nature and mechanism of gene action.
`**` If a useful new combinations is formed it can be used in plant breeding.
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