At the metaphase plate:
1. | The sister chromatids of a chromosome are connected by their kinetochores to the spindle fibers from the same pole |
2. | The non sister chromatids of a chromosome are connected by their kinetochores to the spindle fibers from the same pole |
3. | The sister chromatids of a chromosome are connected by their kinetochores to the spindle fibers from the opposite poles |
4. | The non sister chromatids of a chromosome are connected by their kinetochores to the spindle fibers from the opposite poles |
Which of the following cells is in transition to metaphase?
1 | 2. | ||
3. | 4. |
The Mitotic [M] phase of a typical eukaryotic cell is divided into:
1. | Two stages | 2. | Three stages |
3. | Four stages | 4. | Five stages |
During which stage of mitosis do the following events occur?
I. Centromeres split and chromatids separate
II. Chromatids move to opposite poles
1. | Prophase | 2. | Metaphase |
3. | Anaphase | 4. | Telophase |
Which of the following is not a continuous process during cell cycle?
1. Synthesis of DNA
2. Cell growth
3. Metabolism
4. Both cell growth and metabolism
The enzyme recombinase functions during:
1. | Zygotene | 2. | Pachytene |
3. | Diplotene | 4. | Diakinesis |
Match each item in Column I with one in Column II and select the correct answer from the codes given below:
Column I |
|
Column II |
|
A |
Zygotene |
a |
Pairing of homologous chromosomes |
B |
Pachytene |
b |
Appearance of chiasma |
C |
Diplotene |
c |
Terminalization of chiasma |
D |
Diakinesis |
d |
Crossing over |
Codes:
A | B | C | D | |
1. | a | c | b | d |
2. | a | d | b | c |
3. | a | b | c | d |
4. | b | c | d | a |
The cell shown in the given diagram is in:
|
Identify the incorrect statement:
1. | The nuclear membrane and nucleolus reappear during Telophase I |
2. | The nuclear membrane disappears by the end of Prophase II |
3. | DNA replicates during interkinesis between meiosis I and meiosis II |
4. | Chromosomes do not reach the extremely extended state of interphase nucleus |
All the following are significances of mitosis except:
1. Restoration of nuclear/cytoplasmic ratio
2. Growth of living organisms
3. Replacement of lost cells
4. Generation of genetic variation