Protein sequences are encoded in .................

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where protein sequences are encoded. This refers to the genetic material that contains the information for building proteins.

2. **Identifying the Genetic Material**: The primary molecule that encodes genetic information in living organisms is DNA (Deoxyribonucleic Acid). DNA contains the sequences of nucleotides that determine the structure of proteins.

3. **Transcription Process**: The process of encoding protein sequences begins with DNA being transcribed into messenger RNA (mRNA). This is a crucial step because mRNA serves as a template for protein synthesis.

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