Read the following statements and select the correct option stating which ones are true (T) and which ones are false (F)
in metaphase I spindle fibre attaches to homologus chromosome white in metaphase II attaches to chromatids.
Chromosome completely decondenese in telophase I.
Blvalent is fromed at leptotene stage level become clearly visible in zygotene stage
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 determine the truth value of each statement regarding meiosis, let's analyze them one by one:

1. **Statement 1**: "In metaphase I, spindle fibers attach to homologous chromosomes, while in metaphase II, they attach to chromatids."
- **Analysis**: In metaphase I of meiosis, homologous chromosomes (each consisting of two sister chromatids) line up at the metaphase plate, and spindle fibers attach to these homologous chromosomes. In metaphase II, the homologous chromosomes have been separated, and the spindle fibers attach to the sister chromatids. Therefore, this statement is **True (T)**.

2. **Statement 2**: "Chromosomes completely decondense in telophase I."
- **Analysis**: During telophase I, the chromosomes do begin to decondense, but they do not completely decondense until telophase II. Thus, this statement is **False (F)**.

3. **Statement 3**: "Bivalents are formed at the leptotene stage and become clearly visible in the zygotene stage."
- **Analysis**: Bivalents (paired homologous chromosomes) actually become visible during the zygotene stage of prophase I, not leptotene. Leptotene is the stage where chromosomes start to condense but are not yet paired. Therefore, this statement is **False (F)**.

4. **Statement 4**: "Diakinesis represents the transition to metaphase I."
- **Analysis**: Diakinesis is the final stage of prophase I, where chromosomes are fully condensed and the nuclear envelope breaks down, leading to metaphase I. Hence, this statement is **True (T)**.

### Summary of Truth Values:
- Statement 1: True (T)
- Statement 2: False (F)
- Statement 3: False (F)
- Statement 4: True (T)

### Final Answer:
The correct sequence of truth values is: T, F, F, T.