The recent branch of taxonomy is

Options

A. karyotaxonomy (based on structure/ number and banding of chromosomes
B. cytotaxonomy (based on cytoplasmic structures)
C. evolution of species
D. phylogeny

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a recent branch of taxonomy. Taxonomy is the science of classification of living organisms.

2. **Identifying the Options**: The options provided are:
- Karyotaxonomy
- Cytotaxonomy
- Evolution of species
- Phylogeny

3. **Defining Taxonomy**: Taxonomy involves classifying organisms based on various characteristics, such as physical traits, genetic information, and evolutionary relationships.

4. **Analyzing the Options**:
- **Karyotaxonomy**: This branch focuses on the classification of organisms based on the structure and number of chromosomes. "Karyo" refers to the nucleus, which contains chromosomes.
- **Cytotaxonomy**: This branch deals with classification based on cellular characteristics, particularly the cytoplasm. It is not as recent as karyotaxonomy.
- **Evolution of Species**: This concept relates to how species evolve over time but is not a branch of taxonomy.
- **Phylogeny**: This refers to the evolutionary history and relationships among species, which is also not a recent branch of taxonomy.

5. **Conclusion**: Among the given options, karyotaxonomy is the most recent branch of taxonomy as it focuses on the classification based on chromosomal characteristics.

**Final Answer**: The recent branch of taxonomy is **karyotaxonomy**.

---