Select an incorrect statement

Options

A. Both DNA and RNA are able to mutate.
B. RNA mutate at a slower rate.
C. Viruses having RNA genome and having shorter life span mutate and evolve faster.
D. RNA can directly code for the synthesis of proteins, hence can easily express the characters

Answer

To solve the question "Select an incorrect statement," we will evaluate each statement provided in the video transcript step by step.

### Step-by-Step Solution:

1. **Statement A: Both DNA and RNA are able to mutate.**
- **Evaluation:** This statement is correct. Both DNA and RNA can undergo mutations, which are changes in their nucleotide sequences. Mutations can occur through various mechanisms such as substitutions, deletions, or insertions in both types of nucleic acids.

2. **Statement B: RNA mutates at a slower rate.**
- **Evaluation:** This statement is incorrect. RNA actually mutates at a faster rate than DNA. This is due to its single-stranded nature and the presence of uracil, which makes RNA less stable compared to the double-stranded DNA that contains thymine. Therefore, RNA's instability leads to a higher mutation rate.

3. **Statement C: Viruses having RNA genome and having shorter lifespan mutate and evolve faster.**
- **Evaluation:** This statement is correct. RNA viruses tend to have a higher mutation rate and evolve quickly due to their shorter lifespan and the inherent instability of RNA. The shorter length of the RNA genome also contributes to a higher probability of mutations.

4. **Statement D: RNA can directly code for the synthesis of proteins hence can easily express characters.**
- **Evaluation:** This statement is correct. RNA, particularly messenger RNA (mRNA), plays a direct role in coding for proteins. The proteins synthesized from RNA are responsible for expressing traits or characteristics in an organism.

### Conclusion:
The incorrect statement among the options is **Statement B: RNA mutates at a slower rate.**

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