Question

The frequency of crossing-over occurring between two genes located on the same chromosomes depends on

• A. Length of the chromosome
• B. Position of the centromere
• C. Activities of two genes
• D. Distance between two genes

Answer 1

Answer: (D)

Distance between two genes

• Crossing over is a phenomenon in which the homologous chromosomes exchange the genetic material.
• It causes variation and is a major cause of genetic diversity.
• It mainly takes place during meiosis.
• The distance between the two genes located on the same chromosome determines the frequency of crossing over.
• The lesser is the distance more will be the frequency of crossing over.
• So, the correct answer is option D.