Read the given Statements and select the CORRECT one.

Options

A. DNA is preferred genetic material over Proteins because amino acids in proteins cannot be arranged variously to from long chains .
B. In microsatellite DNA , repetitive nucleotide sequence of 10-15 bp units are flanked by restriction sites.
C. RNA renaturation after melting is slow than DNA renaturation
D. Noncoding DNA sequence code for tRNA and rRNA

Answer

To solve the question, we need to analyze each statement provided and determine which one is correct.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- The statement claims that DNA is preferred genetic material over proteins because amino acids in proteins can't be arranged variously to form long chains.
- **Evaluation:** This statement is incorrect. Amino acids can indeed be arranged in various sequences to form long polypeptide chains. The preference for DNA as genetic material is due to its stability, ability to replicate, and its role in heredity and evolution.

**Hint:** Consider the properties of DNA and proteins in terms of genetic material.

2. **Analyze the Second Statement:**
- The statement mentions that in microsatellite DNA, repetitive nucleotide sequences of 10 to 15 base pair units are flanked by restriction sites.
- **Evaluation:** This statement is also incorrect. Microsatellite DNA consists of repetitive sequences, but these sequences are not necessarily flanked by restriction sites.

**Hint:** Recall the characteristics of microsatellite DNA and its structure.

3. **Analyze the Third Statement:**
- This statement claims that RNA renaturation after melting is slower than DNA renaturation.
- **Evaluation:** This statement is correct. RNA, being single-stranded, has a more complex structure (like tRNA's cloverleaf structure) that makes renaturation slower compared to the double-stranded DNA, which can easily reform its hydrogen bonds.

**Hint:** Think about the structural differences between RNA and DNA and how they affect their renaturation.

4. **Analyze the Fourth Statement:**
- The statement asserts that non-coding DNA sequences code for transfer RNA and ribosomal RNA.
- **Evaluation:** This statement is incorrect. Non-coding sequences do not code for any RNA. Only coding sequences (like mature mRNA) are responsible for coding proteins and other RNA types.

**Hint:** Differentiate between coding and non-coding sequences in DNA.

### Conclusion:
After analyzing all the statements, the **correct statement** is the third one: "RNA renaturation after melting is slower than DNA renaturation."