Q. Select the matched ones. I . S-phase - DNA replication II. Zygotene - Synapsis III. Diplotene - Crossing over IV. Meiosis - Both haploid and diploid cells V $G_{2}$-phase - Quiescent stage
A) I and II only
B) III and IV only
C) III and V only
D) I,III and V only
Explanation
S or synthetic phase marks the period during which DNA synthesis or replication takes place. During this phase, the amount of DNA per cell doubles. The second stage of prophase-I is called zygotene. During this stage, chromosomes start pairing together and this process of association is called synapsis. Such paired chromosomes are called homologous chromosomes. Synapsis is accompanied by the formation of a complex structure called synaptonemal complex.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.