Nuclear DNA exists as complete of nucleoprotein called ...A.. that condenses into ...B.. during ...C... These A, B,C are respectively

Options

A. Chromatids , chromosomes,Interkinesis .
B. chromosomes Chromatids , S-phase.
C. Chromatin , Chromosome , Interphase .
D. Chromatin , Chromosome , M - phase .

Answer

To solve the question, we need to identify the terms that correspond to the blanks A, B, and C in the statement: "Nuclear DNA exists as a complete of nucleoprotein called ...A.. that condenses into ...B.. during ...C...".

### Step-by-Step Solution:

1. **Identify A (the complete of nucleoprotein)**:
- Nuclear DNA exists in a form that is associated with proteins. This complex of DNA and proteins is known as **chromatin**. Therefore, A = **chromatin**.

2. **Identify B (what it condenses into)**:
- During cell division, chromatin condenses to form distinct structures that are visible under a microscope. These structures are called **chromosomes**. Therefore, B = **chromosomes**.

3. **Identify C (the phase during which this occurs)**:
- The condensation of chromatin into chromosomes occurs during the **M phase** (mitotic phase) of the cell cycle, which includes both mitosis and cytokinesis. Therefore, C = **M phase**.

### Final Answer:
- A = chromatin
- B = chromosomes
- C = M phase

Thus, the complete statement would read: "Nuclear DNA exists as a complete of nucleoprotein called **chromatin** that condenses into **chromosomes** during **M phase**."