A haploid set of chromosomes is called

Options

A. gene
B. genome
C. grana
D. nucleoplasm

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Haploid":**
- The term "haploid" refers to a single set of chromosomes. In biological terms, this means that the cell contains one copy of each chromosome, as opposed to two copies (diploid).

2. **Identifying Chromosome Sets:**
- In humans and many organisms, somatic cells (body cells) are diploid (2N), meaning they have two sets of chromosomes. In contrast, gametes (sperm and egg cells) are haploid (N), containing only one set of chromosomes.

3. **Significance of Haploid Cells:**
- Haploid cells are crucial for sexual reproduction. When two haploid gametes (one from each parent) fuse during fertilization, they form a diploid zygote (2N), restoring the diploid number of chromosomes.

4. **Relating Haploid to Genome:**
- A haploid set of chromosomes is part of the genome. The genome encompasses all the genetic material of an organism, including all its chromosomes.

5. **Conclusion:**
- Therefore, a haploid set of chromosomes is referred to as a "genome" in the context of the genetic material it represents.

**Final Answer:**
A haploid set of chromosomes is called a **genome**.

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