Identify the correct statements

Options

A. Each metaphasic chromosome shows 4DNA molecules
B. Each metaphasic chromatid shows one DNA molecule
C. Each chromatid shows two DNA molecules in all stages of meiosis
D. Early anaphasic chromosomes shows one DNA but two kinetochore discs

Answer

To identify the correct statements regarding chromosomes and chromatids during cell division, we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Understanding Chromatids and DNA Molecules:**
- Each chromatid is a single strand of DNA. When chromosomes are duplicated during the S phase of the cell cycle, each chromosome consists of two sister chromatids, each containing one DNA molecule.

2. **Analyzing Each Statement:**
- **Statement 1:** "Each metaphasic chromosome shows four DNA molecules."
- This statement is incorrect. In metaphase, each chromosome consists of two sister chromatids, and each chromatid has one DNA molecule. Therefore, a metaphasic chromosome has a total of **two DNA molecules** (not four).

- **Statement 2:** "Each metaphasic chromatid shows one DNA molecule."
- This statement is correct. Each sister chromatid indeed contains one DNA molecule, so during metaphase, each chromatid shows **one DNA molecule**.

- **Statement 3:** "Each chromatid shows two DNA molecules in all stages of meiosis."
- This statement is incorrect. In meiosis, during the stages where chromosomes are duplicated, each chromatid contains one DNA molecule. Therefore, it does not show two DNA molecules in all stages of meiosis.

- **Statement 4:** "Each anaphasic chromosome shows one DNA but two kinetochore discs."
- This statement is incorrect. During anaphase, the sister chromatids are pulled apart to opposite poles. Each chromatid (now considered a chromosome) has one DNA molecule, but there is only one kinetochore per chromatid, not two. Therefore, the statement is misleading.

3. **Conclusion:**
- The only correct statement is: **"Each metaphasic chromatid shows one DNA molecule."**

### Summary of Correct Statements:
- The correct statement identified is: **"Each metaphasic chromatid shows one DNA molecule."**