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svlad2 [7]
2 years ago
11

When homologous chromosomes cross over, what occurs?

Biology
2 answers:
Nostrana [21]2 years ago
6 0

Answer:

this happens between prophase I and metaphase I

Explanation:

PIT_PIT [208]2 years ago
6 0

Explanation:

during crossing over , homologous chromosomes come together in order to form a tetrad . This close contact allows the nonsister chromatids from homologous chromosomes to attach to one another and exchange nucleotide sequences.

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