Read the following statements and select the correct option stating which ones are true (T) and which ones are false (F)
1. In metaphase I spindle fibre attaches to homologus chromosome white in metaphase II attaches to chromatids.
2. Chromosome completely decondenese in telophase I.
3. Blvalent is fromed at leptotene stage level become clearly visible in zygotene stage
4. Diakinesis represents transition to metaphase I.

Options

A. T-F-F-T
B. T-T-F-F
C. T-F-T-T
D. F-T-F-T

Answer

To solve the question, we need to evaluate each statement one by one and determine whether they are true (T) or false (F).

**Step 1: Analyze Statement 1**
- Statement: "In metaphase I spindle fibre attaches to homologous chromosomes while in metaphase II it attaches to chromatids."
- Explanation: During metaphase I of meiosis, spindle fibers indeed attach to homologous chromosomes (pairs of chromosomes). In metaphase II, spindle fibers attach to the sister chromatids. Therefore, this statement is **True (T)**.

**Step 2: Analyze Statement 2**
- Statement: "Chromosome completely decondenses in telophase I."
- Explanation: In telophase I, chromosomes begin to decondense, but they do not completely decondense until telophase II. Hence, this statement is **False (F)**.

**Step 3: Analyze Statement 3**
- Statement: "Bivalent is formed at leptotene stage level and becomes clearly visible in zygotene stage."
- Explanation: Bivalents (or tetrads) are formed during the pachytene stage of prophase I, not leptotene. They become visible during zygotene, but the formation occurs later. Therefore, this statement is **False (F)**.

**Step 4: Analyze Statement 4**
- Statement: "Diakinesis represents transition to metaphase I."
- Explanation: Diakinesis is the final stage of prophase I, where chromosomes condense and prepare for metaphase I. Thus, this statement is **True (T)**.

**Final Evaluation:**
- Statement 1: True (T)
- Statement 2: False (F)
- Statement 3: False (F)
- Statement 4: True (T)

So, the correct order of the statements is: **True, False, False, True**.

**Final Answer: T, F, F, T**

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