Question

Which of the following statements is true regarding the image shown below?

• A. Alleles between sister chromatids are exchanged during meiotic divisions.
• B. Non-sister chromatids within a tetrad exchange genetic material.
• C. A maternal chromosome swaps genetic material with a paternal chromosome during prophase of mitosis.
• D. Crossing over is a mutation where pieces of one chromosome are translocated to another chromosome.

Answer 1

The correct option is B Non-sister chromatids within a tetrad exchange genetic material.

During Pachytene stage - Prophase I of Meiosis I, non-sister chromatids of homologous chromosomes exchange genetic material by a process called crossing over, which is responsible for variations between the offsprings and parents.

So, the correct answer is 'Non-sister chromatids within a tetrad exchange genetic material'