The comparitive genomics enhances the understanding of

Options

A. functions of each genome and their evolutionary relationships
B. functions of only one genome
C. non-functional genes of both the genomes
D. functions of some genes of each genome and their structural relationships.

Answer

### Step-by-Step Solution:

1. **Understanding Comparative Genomics**:
- Comparative genomics is the field of biological research in which the genomic features of different organisms are compared. This includes the analysis of genes, gene order, and other genomic features.

2. **Purpose of Comparative Genomics**:
- The main purpose of comparative genomics is to enhance our understanding of the functions of genomes across different species and to uncover evolutionary relationships among them.

3. **Analyzing the Options**:
- **Option A**: Functions of each genome and their evolutionary relationship.
- This option suggests that comparative genomics helps in understanding both the functions of various genomes and their evolutionary connections.
- **Option B**: Function of only one genome.
- This option is incorrect because comparative genomics involves multiple genomes, not just one.
- **Option C**: Non-functional genes of both genomes.
- This option is also incorrect as comparative genomics focuses on functional genes, which are crucial for understanding evolutionary changes.
- **Option D**: Functional genes of some each genome with their structural relationships.
- While this option mentions functional genes, it incorrectly emphasizes structural relationships rather than evolutionary relationships.

4. **Conclusion**:
- The correct answer is **Option A**: Functions of each genome and their evolutionary relationship. This option accurately reflects the goals of comparative genomics.