science
Grade-10
Easy

Question

When does crossing over occur in meiosis?

  1. Metaphase I

  2. Prophase I

  3. Anaphase II

  4. Prophase II

hintHint:

Crossing over takes place in the first stage of meiosis.

The correct answer is:

Prophase I


    • The first meiosis, meiosis I, begins in prophase I.
    • In prophase, I, a complex of DNA and proteins known as chromatin condenses to form chromosomes.
    • Duplicated pairs of chromosomes, known as sister chromatids, remain connected at a central point called the centromere.

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