science
Grade-10
Easy
Question
When does crossing over occur in meiosis?
Metaphase I
Prophase I
Anaphase II
Prophase II
Metaphase I
Prophase I
Anaphase II
Prophase II
Hint:
In this stage chromosome condensation takes place.
The correct answer is: Prophase I
- In prophase I, homologous chromosomes pair to form synapses. This is a step unique to meiosis.
- Paired chromosomes are called bivalent chromosomes and reveal the formation of chiasmata by genetic recombination. Chromosome condensation allows it to be seen under a microscope.
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