Question

Match the following column-A with
column-B
Column-A Column-B
(phases)
(Their events)
a. Leptotene 1. Crossing over
b. Zygotene 2. Desynapsis
c. Pachytene 3. Synapsis
d. Diplotene 4. Bouquet stage​

Answer 1

Answer:

a. Leptotene →Bouquet stage

b. Zygotene →Synapsis

c. Pachytene →Crossing Over

d. Diplotene →Desynapsis

Answer 2

Here are the matches given below -

a. Leptotene -------------> 4. Bouquet Stage.

b. Zygotene ---------------> 3. Synapsis

c. Pachytene -------------> 1. Crossing over.

d. Diplotene ---------------> 2. Desynapsis.

EXPLAINATION :

1. In the leptotene phase, there occurs a bouquet stage. Here, chromatin fibres gets coiled and also gets condensed.

2. In the zygotene stage, the chromosomes which are homologous starts pairing which is known as synapsis.

3. Crossing over of the chromatids which are non-sister occurs in pachytene stage.

4. In the stage of diplotene, desynapsis occurs.