Which of the following contaions the actual genetic part of a sperm ?

Options

A. Whole of it
B. Tail
C. Middle piece
D. Head

Explanation

To determine which part of the sperm contains the actual genetic material, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Sperm**: A mature human sperm, also known as spermatozoon, consists of three main parts: the head, the middle piece, and the tail.

2. **Identify the Function of Each Part**:
- **Head**: This is the anterior part of the sperm and contains the nucleus, which houses the genetic material (DNA). It also contains an acrosome filled with enzymes that help penetrate the ovum.
- **Middle Piece**: This section is packed with mitochondria that provide energy for the sperm's motility but does not contain genetic material.
- **Tail**: The tail is responsible for the motility of the sperm, allowing it to swim towards the ovum, but it also does not contain genetic material.

3. **Locate the Genetic Material**: In eukaryotic cells, including sperm cells, the genetic material (DNA) is enclosed within the nucleus. Since the nucleus is found in the head of the sperm, this is where the genetic part is located.

4. **Conclusion**: Therefore, the part of the sperm that contains the actual genetic material is the head, specifically the nucleus within the head.

### Final Answer:
The genetic part of a sperm is located in the **head** of the sperm.

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