Amount of DNA per diploid cell of man and its length is about

Options

A. 100 g and `1.74mxx10^(15)`
B. 5.6 pg and 1.74cm
C. 6.4 pg and 220 cm
D. 100g and 1.74 m

Answer

To solve the question regarding the amount of DNA per diploid cell of a human and its length, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of DNA**:
- DNA in humans is structured as a double helix, which is formed from nucleotides.

2. **Determine the Length of DNA in a Diploid Cell**:
- The total length of DNA in a diploid human cell is approximately 2 meters (or 200 centimeters). This is because humans have 23 pairs of chromosomes, and each chromosome contains a single DNA molecule.

3. **Calculate the Amount of DNA in a Haploid Cell**:
- The amount of DNA in a haploid cell (like sperm or egg cells) is about 3 picograms (pg).

4. **Calculate the Amount of DNA in a Diploid Cell**:
- Since a diploid cell contains two sets of chromosomes, the amount of DNA in a diploid cell is approximately double that of a haploid cell. Therefore:
\[ \text{Amount of DNA in diploid cell} = 2 \times 3 \text{ pg} = 6 \text{ pg} \]

5. **Review the Options**:
- The options provided in the question were likely incorrect or misleading. However, based on our calculations, the correct amount of DNA in a diploid human cell is approximately 6 picograms.

6. **Final Summary**:
- The total length of DNA in a diploid human cell is about 2 meters (200 cm), and the amount of DNA is approximately 6 picograms.