EASY
NEET
IMPORTANT
Earn 100
During prophase-I homologous chromosomes pair with each other to form bivalents. Each bivalent is an association of
Two chromatids and one centromere
Two chromatids and two centromeres
Four chromatids and four centromeres
four chromatids and two centromeres
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Important Questions on Cell Cycle and Cell Division
MEDIUM
NEET
IMPORTANT
EASY
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IMPORTANT
| (i) | Prophase | Chromosomes begin to uncoil |
|---|---|---|
| (ii) | Metaphase | Chromatids move apart |
| (iii) | Telophase | The nuclear membrane reappears |
| (iv) | Late anaphase | Each chromosome consists of two anaphase chromatids |
| (v) | Interphase | Chromosomes are not distinct |
HARD
NEET
IMPORTANT
Match List-I (Distinguishing features based on chromosomal appearance) with List-II (Stage of meiosis) and select the correct answer using the codes given below the list
| List-I | List-II | ||
| A. | Terminalized chiasmata | 1. | Pachytene |
| B. | Exchange of segments of chromatids | 2. | Zygotene |
| C. | Synapsis of homologous chromosomes | 3. | Diakinesis |
| D. | Appearance of chiasmata | 4. | Leptotene |
| 5. | Diplotene |
MEDIUM
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IMPORTANT
MEDIUM
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IMPORTANT
Match the following lists.
| List | List | ||
| phase | Replication of | ||
| phase | Quiescent stage | ||
| phase | Condensation of chromatin | ||
| phase | Protein synthesis | ||
| The interval between mitosis and initiation of replication |
The correct answer is
MEDIUM
NEET
IMPORTANT
Match list-I with list-II and select the correct answer using the codes given below the lists.
| List-I | List-II | ||
| A. | Pairing of homologous chromosomes. | 1. | Chiasmata |
| B. | Actual inter change of complex segments between two homologous chromosomes. | 2. | Synaptonemal complex |
| C. | Protein body formed between paired homologous chromosomes. | 3. | Synapsis |
| D. | The cross shaped configuration visible at diplotene between homologous chromosomes | 4. | Crossing over |
HARD
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IMPORTANT
