Q. No.Identify the correct statement amongst the following:
| 1. | Crossing over occurs in prophase I of meiosis and metaphase of mitosis. |
| 2. | DNA replication occurs once prior to mitosis and twice prior to meiosis. |
| 3. | Both mitosis and meiosis result in daughter cells identical to the parent cells. |
| 4. | Karyokinesis occurs once in mitosis and twice in meiosis. |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
77%
From NCERT
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In meiosis:
| 1. | A single round of DNA replication is followed by two sequential divisions with chromosome number and DNA content getting reduced twice |
| 2. | A single round of DNA replication is followed by two sequential divisions with chromosome number getting reduced twice and DNA content getting reduced once |
| 3. | A single round of DNA replication is followed by two sequential divisions with chromosome number getting reduced once and DNA content getting reduced twice |
| 4. | A single round of DNA replication is followed by two sequential divisions with chromosome number and DNA content getting reduced once |
Subtopic: Cell Cycle: Meiosis I |
55%
From NCERT
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Meiosis results in the formation of:
| 1. | Two genetically identical diploid cells |
| 2. | Two genetically non identical diploid cells |
| 3. | Four genetically identical haploid cells |
| 4. | Four genetically non identical haploid cells |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
65%
From NCERT
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Synapsis occurs between
1. mRNA and ribosomes
2. Spindle fibers and centromere
3. Two homologous chromosomes
4. A male and a female gamete
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
92%
From NCERT
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The enzyme recombinase is required at which stage of meiosis ?
| 1. | Pachytene | 2. | Zygotene |
| 3. | Diplotene | 4. | Diakinesis |
Subtopic: Cell Cycle: Meiosis I |
84%
From NCERT
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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 |
Subtopic: Cell Cycle: Meiosis I |
92%
From NCERT
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The correct chronology of stages of Prophase I is:
| 1. | Leptotene – Zygotene – Pachytene – Diplotene – Diakinesis |
| 2. | Leptotene – Pachytene – Zygotene – Diplotene – Diakinesis |
| 3. | Leptotene – Zygotene – Pachytene – Diakinesis – Diplotene |
| 4. | Zygotene – Leptotene – Pachytene – Diakinesis – Diplotene |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
94%
From NCERT
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Which of the following stages of Prophase I of meiosis I can last for many months or years in certain vertebrate oocytes?
| 1. | Zygotene | 2. | Pachytene |
| 3. | Diplotene | 4. | Diakinesis |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
87%
From NCERT
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The paired homologues seen during zygotene of meiosis I are known as:
1. Bivalent
2. Tetrad
3. Mitotic apparatus
4. Sister chromosomes
1. Bivalent
2. Tetrad
3. Mitotic apparatus
4. Sister chromosomes
Subtopic: Cell Cycle: Meiosis I |
81%
From NCERT
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Which of the following is not a feature of diakinesis stage of prophase I of meiosis I?
| 1. | Terminalization of chiasmata |
| 2. | Meiotic spindle assembling to prepare separation of homologues |
| 3. | Decondensation of the chromatin |
| 4. | NEBD and disappearance of nucleolus |
Subtopic: Cell Cycle: Meiosis I |
60%
From NCERT
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