Reduction in the number of chromosomes occurs during

1. Diplotene

2. Diakinesis

3. Metaphase I

4. Anaphase I

Congression of chromosomes is seen in

1. Prophase

2. Metaphase

3. Anaphase

4. Telophase

The complex formed by a pair of synapsed homologous chromosomes is

1. Dyad

2. Tetrad

3. Univalent

4. Bivalent

Microtubules attach to kinetochore of sister chromatids during

1. Anaphase-I

2. Prophase-II

3. Metaphase-II

4. Anaphase-II

Metaphase I is different from mitotic metaphase as in the later case

1.  Two metaphasic plates are formed

2.  Tetrads are arranged at the equator

3.  Single metaphasic plate is formed

4.   Homologous chromosomes get separated from each other

In which stage of mitosis, shape of chromosomes is best studied?

1. Prophase

2. Metaphase

3. Anaphase

4. Telophase

The stage during which chiasmata becomes visible is

1. Pachytene

2. Diplotene

3. Diakinesis

4. Zygotene

Which phase of mitosis is essentially the reverse of prophase in terms of nuclear changes?

1. S-phase

2. Anaphase

3. Telophase

4. Interphase

Chromatin condensation and movement of duplicated centriole towards opposite pole can be observed during -

1. Prophase

2. Metaphase

3. Anaphase

4. Telophase

Following are the events occurs during meiosis :

(A) Appearance of chiasmata

(B) Synapsis

(C) Assembly of meiotic spindle

(D) Use of recombinase enzyme

Choose the correct sequence :-

1. A$\to$B$\to$C$\to$D

2. B$\to$D$\to$A$\to$C

3. D$\to$C$\to$B$\to$A

4. B$\to$C$\to$A$\to$D