Q. No.The two asters together with spindle fibers form the:
1. Centrosome
2. Mitotic apparatus
3. Kinetochore
4. Chiasmata
1. Centrosome
2. Mitotic apparatus
3. Kinetochore
4. Chiasmata
Prophase of mitosis is not characterized by:
1. condensation of chromatin
2. migration of centrosomes to opposite poles
3. formation of mitotic apparatus
4. pairing of homologous chromosomes
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Onion root tip has 16 chromosomes in each cell. How many chromosomes will the cell respectively have at G1 phase, after S phase and after M phase?
| 1. 16, 32, 16 | 2. 16, 32, 8 |
| 3. 16, 16, 8 | 4. 16, 16, 16 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Cells at the end of prophase, when viewed under the microscope, show:
| 1. | Nuclear envelope | 2. | Nucleolus |
| 3. | Mitochondria | 4. | Endoplasmic reticulum |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The cell expected to go through the events of cell cycle in the least amount of time would be:
| 1. Epithelial cell in humans | 2. Neuron in humans |
| 3. Yeast cell | 4. Escherichia coli |
Identify the stage of mitosis shown in the given diagram:
 |
|
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The start of the second phase of mitosis, metaphase, is marked by:
1. complete disintegration of the nuclear envelope
2. alignment of chromosomes at the equatorial plate
3. de-condensation of chromatin
4. reappearance of the nucleolus
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Plants show mitotic divisions:
1. only in germ line cells
2. at the root apex and shoot apex only
3. in both diploid and haploid cells
4. for the productions of gametes only
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Consider the given two statements:
| I. | Morphology of chromosomes is best studied at metaphase |
| II. | At this stage, a chromosome is made up of two sister chromatids, held together at the centromere |
1. Both I and II are true and II explains I
2. Both I and II are true but II does not explain I
3. I is true but II is false
4. I is false but II is true
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
If a cell had 4[2 pairs] chromosomes at G1 phase, what would be the number of chromosomes in this cell at the end of anaphase?
| 1. | 2 | 2. | 4 |
| 3. | 6 | 4. | 8 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
© 2024 GoodEd Technologies Pvt. Ltd.