science
Grade-10
Easy

Question

Which of the following structures are formed by two homologous chromosomes pair during crossing over?

  1. Base Pair

  2. Chromatid

  3. Tetrad

  4. None of these

hintHint:

A tetrad is formed by two homologous chromosomes pair during crossing over

The correct answer is:

Tetrad


    • In prophase, I, pairs of homologous chromosomes come together to form tetrads or bivalent chromosomes containing four chromatids.
    • Recombination can occur between any two chromatids within this tetrad structure.

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