Question

Match the substages of prophase I of first meiotic division listed in column I with the important events pertaining to respective stages given under column II; choose the answer which gives the correct combination of alphabets of the two columns:

$\begin{array}{cccc}& ColumnISubstagesofprophaseI& & ColumnIIImportantevents\\ A& \text{Zygotene}& p& \text{Chromomeres}\\ B& \text{Pachytene}& q& \text{Bivalents migrate to periphery}\\ C& \text{Diplotene}& r& \text{Terminalization of chiasmata begins}\\ D& \text{Diakinesis}& s& \text{Crossing over}\\ & & t& \text{Synapsis}\end{array}$

• A. A = t, B = s, C = r, D = q
• B. A = p, B = s, C = r, D = q
• C. A = s, B = p, C = r, D = q
• D. A = s, B = t, C = r, D = q

Answer 1

The correct option is A

A = t, B = s, C = r, D = q

Zygotene - synapsis
Pachytene - crossing over
Diplotene - Terminalization of chiasmata begin
Diakinesis - Bivalents migrate to periphery