Zygotene

Q. Synaptonemal complex is formed during:

1. Zygotene
2. Diplotene
3. Diakinesis
4. Pachytene

Q.

Chiasmata forms in which of these phases ?

1. Diplotene

2. Metaphase

3. Zygotene

4. Anaphase

Q.

Identify the stages of Prophase I, going from left to right, from the images below.

1. Zygotene, Pachytene, Diplotene, Diakinesis, Leptotene.

2. Pachytene, Diplotene, Diakinesis, Pachytene, Diplotene.

3. Diplotene, Diakinesis, Leptotene, Zygotene, Pachytene.

4. Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis.

Q. During which phase of prophase-I of meiosis does the process of synapsis occur?

1. Diplotene
2. Pachytene
3. Zygotene
4. Leptotene

Q.

Which of the following occurs in meiosis but not in mitosis?

1. Separation of sister chromatids at anaphase

2. Pairing of homologous chromosomes at the metaphase plate

3. Attachment of spindle fibres to the kinetochores

4. Replication of DNA prior to the start of cell division

Q.

Which of the following is not a characteristic feature of mitosis in somatic cells?

1. Synapsis

2. Formation of spindle fibres

3. Disappearance of nucleolus

4. Chromosome movement

Q.

During synapsis the number of thread (Chromonemata) in each chromosome is:

1. Two

2. Four

3. Eight

4. Many

Q.

Pairing of homologous chromosomes is called:

1. Tetrad

2. Crossing over

3. Terminalisation

4. Synapsis

Q. When a cell is in metaphase I, it consists of bivalents with

1. two chromatids and one centromere
2. two chromatids and two centromeres
3. four chromatids and two centromeres
4. four chromatids and four centromeres

Q. Synapsis is the process of pairing together of two ________.

1. sister chromatids
2. non-homologous chromosomes
3. homologous chromosomes
4. sister chromatids of non-homologous chromosomes