The carrier of hereditary material are

Options

A. Chromosomes
B. Gene
C. Gametes
D. Gametocytes

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Hereditary Material**: Hereditary material refers to the genetic information that is passed from parents to offspring. This material is responsible for the traits and characteristics that offspring inherit from their parents.

2. **Identifying the Carriers**: The carriers of hereditary material include:
- **Chromosomes**: These are structures made of DNA that contain genes. They are the primary carriers of genetic information.
- **Genes**: These are segments of DNA located on chromosomes that determine specific traits. While genes are crucial, they are not carriers on their own but are part of chromosomes.
- **Gametes**: These are reproductive cells (sperm and ovum) that carry chromosomes from parents to offspring during reproduction.
- **Gametocytes**: These are cells that give rise to gametes but do not directly carry hereditary material to the offspring.

3. **Analyzing the Options**:
- **Chromosomes** are the correct answer because they are the structures that carry the genetic material (DNA) and are responsible for inheritance.
- **Genes** are part of chromosomes but do not function as carriers independently.
- **Gametes** do carry hereditary material, but they are not the primary carriers themselves; they contain chromosomes.
- **Gametocytes** are not carriers of hereditary material; they are precursor cells to gametes.

4. **Conclusion**: The best answer to the question "The carrier of hereditary material are" is **Chromosomes**.