Question

Crossing over between chromatids can occur only between:

• A. Homologous chromosomes
• B. Maternal chromosomes
• C. Paternal chromosomes
• D. Any two chromosome

Answer 1

The correct option is A Homologous chromosomes

Crossing over between chromatids can occur only between homologous chromosomes. While the maternal and paternal chromosomes are separating, the chromatid material very often gets exchanged between two members of the homologous pair resulting in genetic recombination during the meiotic cell division.