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svlad2 [7]
3 years ago
11

When homologous chromosomes cross over, what occurs?

Biology
2 answers:
Nostrana [21]3 years ago
6 0

Answer:

this happens between prophase I and metaphase I

Explanation:

PIT_PIT [208]3 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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Slav-nsk [51]

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horrorfan [7]

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3 0
3 years ago
Approximately what percentage of the human genome actually codes for proteins?
34kurt

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