Neet Solved Paper 2015 Question 55
Question: Match the following column I with column II.
| Column I | Column II |
|---|---|
| A. Synapsis aligns homologous chromosomes. | 1. Anaphase-II |
| B. Synthesis of RNA and protein | 2. Zygotene |
| C. Action of enzyme recombinase | 3. $ G _2 $ -phase |
| D. Centromeres do not separate but chromatids move towards opposite poles. | 4. Anaphase-I |
| 5. Pachytene |
Options:
A) A-2 B-1 C-3 D-4
B) A-2 B-3 C-5 D-4
C) A-1 B-2 C-5 D-4
D) A-2 B-3 C-4 D-5
Show Answer
Answer:
Correct Answer: B
Solution:
Here’s the detailed explanation:
-
A. Synapsis aligns homologous chromosomes. → 2. Zygotene
- During the zygotene stage of prophase I in meiosis, homologous chromosomes pair up in a process called synapsis.
-
B. Synthesis of RNA and protein → 3. G2-phase
- The G2 phase of the cell cycle is the period after DNA synthesis (S phase) and before mitosis (M phase), during which the cell synthesizes RNA and proteins necessary for cell division.
-
C. Action of enzyme recombinase → 5. Pachytene
- During the pachytene stage of prophase I in meiosis, the enzyme recombinase facilitates the process of genetic recombination (crossing over) between homologous chromosomes.
-
D. Centromeres do not separate but chromatids move towards opposite poles. → 4. Anaphase-I
- In anaphase I of meiosis, homologous chromosomes (each consisting of two sister chromatids) are separated and move towards opposite poles, but the centromeres do not split, so the sister chromatids remain together.
BETA
