A species of plant is known to have a diploid chromosome number of 14 in each of its cells. Which of the following would be the number of chromosomes found in each cell of one of its polyploid relatives?

Options

A. 4
B. 14
C. 15
D. 28

Answer

To determine the number of chromosomes found in each cell of a polyploid relative of a plant species with a diploid chromosome number of 14, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Diploid Number**: The diploid chromosome number (2n) for the given plant species is 14. This means that in a normal cell, there are 14 chromosomes.

2. **Identify Polyploidy**: Polyploidy refers to the condition of having more than two complete sets of chromosomes. Common types of polyploidy include triploid (3n), tetraploid (4n), pentaploid (5n), and hexaploid (6n).

3. **Calculate Chromosome Numbers for Polyploidy**:
- For **triploid (3n)**:
\[ 3n = 3 \times 7 = 21 \text{ chromosomes} \]
- For **tetraploid (4n)**:
\[ 4n = 4 \times 7 = 28 \text{ chromosomes} \]
- For **pentaploid (5n)**:
\[ 5n = 5 \times 7 = 35 \text{ chromosomes} \]
- For **hexaploid (6n)**:
\[ 6n = 6 \times 7 = 42 \text{ chromosomes} \]

4. **Conclusion**: The possible number of chromosomes in the polyploid relatives can be 21, 28, 35, or 42. Since the question asks for the number of chromosomes in each cell of one of its polyploid relatives, the most straightforward answer is **28 chromosomes**, which corresponds to the tetraploid condition (4n).

### Final Answer:
The number of chromosomes found in each cell of one of its polyploid relatives would be **28 chromosomes**.

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