Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Match list-I and list-II and select the correct answer using the code:| S.No. | List-\[\text{I}\] | List-\[\text{II}\] |
| (Phase of meiosis) | (Event that occur) | |
| 1. | Prophase-\[\text{I}\] | Crossing over occurs |
| 2. | Netaogase-\[\text{II}\] | Sister chromatids migrate to opposite poles |
| 3. | Abaogase-\[\text{I}\] | Homologous line up at equator in pairs |
A) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 1,2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: B
Solution :
The chromatids of two homologous chromosomes exchange homologous segments (crossig over) during prophase at pachytene. In metaphase\[\text{-II}\] the chromosomes become oriented on the equatorial plate and sister chromatids migrate to opposite poles.
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