However, I can provide you with some information about Zoology Optional Notes for UPSC and nucleic acids to help you understand the topic better.

Zoology Optional Notes for UPSC:
Preparing for the UPSC examination requires a comprehensive understanding of the subjects, including Zoology. Zoology is a popular optional subject for the UPSC examination, and there are various study materials available to help aspirants prepare for it. Here are some key points to consider when looking for Zoology Optional Notes:

1. Comprehensive Coverage: Look for notes that cover the entire syllabus of the Zoology optional subject as prescribed by the UPSC. The notes should provide a thorough understanding of the concepts and theories related to zoology.

2. Updated Content: It is important to have access to study materials that are updated with the latest information and developments in the field of zoology. This ensures that you are well-prepared for any questions that may be asked in the examination.

3. Well-Organized: The notes should be well-structured and organized, making it easier for you to navigate through different topics. This will help you in revising and reviewing the content effectively.

4. Practice Questions: Look for notes that include practice questions and previous year question papers. Solving these questions will help you gauge your understanding of the subject and improve your problem-solving skills.

Nucleic Acids:
Nucleic acids are macromolecules that play a crucial role in the storage and transmission of genetic information in living organisms. They are composed of nucleotides, which are made up of a sugar molecule (ribose or deoxyribose), a phosphate group, and a nitrogenous base. There are two types of nucleic acids:

1. DNA (Deoxyribonucleic Acid): DNA is a double-stranded molecule that contains the genetic information of an organism. It is found in the nucleus of cells and is responsible for the inheritance of traits from one generation to the next.

2. RNA (Ribonucleic Acid): RNA is a single-stranded molecule that is involved in various cellular processes, including protein synthesis. It is found in the nucleus and cytoplasm of cells.

Nucleic acids are essential for the functioning of living organisms as they carry the instructions necessary for the synthesis of proteins, which are responsible for the structure and function of cells. They also play a role in the regulation of gene expression and the transmission of genetic information from one generation to the next.

In conclusion, Zoology Optional Notes for UPSC are essential for aspirants preparing for the UPSC examination. They should provide comprehensive coverage of the subject and be well-organized. Nucleic acids, on the other hand, are macromolecules that play a crucial role in the storage and transmission of genetic information. DNA and RNA are the two main types of nucleic acids.