The correct sequence of phases in cell cycle is:
1.
2.
3.
4.
Cells in phase:
1. terminate the cell cycle
2. exit the cell cycle
3. enter the cell cycle
4. suspend the cell cycle
After meiosis I, the resultant daughter cells have
1. | same amount of DNA as in the parent cell in S |
2. | twice the amount of DNA in comparison to haploid |
3. | same amount of DNA in comparison to haploid gamete |
4. | four times the amount of DNA in comparison to haploid gamete |
Crossing over takes place between which chromatids and in which stage of the cell cycle?
1. | Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I. |
2. | Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I. |
3. | Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I. |
4. | Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I. |
Some dividing cells exit the cell cycle and enter the vegetative inactive stage. This is called the quiescent stage . This process occurs at the end of:
1.
2. S phase
3.
4. M phase
Identify the correct statement with regard to phase (Gap 1) of interphase:
1. | The reorganisation of all cell components takes place. |
2. | The cell is metabolically active and grows but does not replicate its DNA |
3. | Nuclear division takes place |
4. | DNA synthesis or replication takes place. |
Dissolution of the synaptonemal complex occurs during :
1. | Zygote | 2. | Diplotene |
3. | Leptotene | 4. | Pachytene |
Match the following with respect to meiosis:
Column I | Column II | ||
(a) | Zygotene | (i) | Terminalization |
(b) | Pachytene | (ii) | Chiasmata |
(c) | Diplotene | (iii) | Crossing over |
(d) | Diakinesis | (iv) | Synapsis |
Select the correct option from the following:
Options: | (a) | (b) | (c) | (d) |
1. | iv | iii | ii | i |
2. | i | ii | iv | iii |
3. | ii | iv | iii | i |
4. | iii | iv | i | ii |
Attachment of spindle fibers to kinetochores of chromosomes becomes evident in:
1. | Anaphase | 2. | Telophase |
3. | Prophase | 4. | Metaphase |
During Meiosis 1, in which stage synapsis takes place?
1. | Pachytene | 2. | Zygotene |
3. | Diplotene | 4. | Leptotene |