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Rasek [7]
2 years ago
14

What is crossing-over, during what phase does it occur, and what is its significance?

Biology
1 answer:
kondaur [170]2 years ago
4 0

Answer:

Crossing over is a biological occurrence that happens during meiosis when the paired homologs, or chromosomes of the same type, are lined up. Hope this helps :)

Explanation:

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Several different mechanisms of mutation can lead to the same phenotype. For example, lets say our phenotype is that flies have white eyes, and we know that this occurs in one particular gene that normally makes the eye colour red. (the red gene)

These mutations likely rendered the red gene ineffective (as the eyes are not red). However, this could happen in a variety of ways.

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