Select the INCORRECT statement.

Options

A. Most plant viruses are RNA viruses.
B. Bacteriophages possess dsDNA.
C. Immunodeficiency virus is a retrovirus.
D. Prisons possess only nucleoid and no proteins.

Answer

To solve the question of selecting the INCORRECT statement, we need to analyze each option provided:

1. **Option A**: "Most plant viruses are RNA viruses."
- This statement is **correct**. The majority of plant viruses indeed have RNA as their genetic material, not DNA.

2. **Option B**: "The bacteriophages possess double-stranded DNA."
- This statement is **correct**. Bacteriophages, which are viruses that infect bacteria, typically have double-stranded DNA as their genetic material.

3. **Option C**: "Immunodeficiency virus is a retrovirus."
- This statement is **correct**. The Human Immunodeficiency Virus (HIV) is classified as a retrovirus, which means it uses RNA as its genetic material and reverse transcribes it into DNA upon entering a host cell.

4. **Option D**: "Prions possess only nucleotides and no proteins."
- This statement is **incorrect**. Prions are infectious agents composed solely of protein and do not contain nucleic acids (like DNA or RNA). Therefore, they do not possess nucleotides.

Based on the analysis, the INCORRECT statement is **Option D**.