Q. Crossing over is the exchange of genetic material between
A) Non-sister chromatids of the homologous chromosomes
B) Sister chromatids of the homologous chromosome
C) Chromatids of non-homologous chromosomes
D) The genes those are completely linked
Explanation
Crossing over is a process that produces new combination of genes by interchanging of segments between nonl-sister chromatids of homologous chromosomes. It occur between homologous chromosomes at four stranded stage during pachytene of prophase-I of meiosis-I.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.