Which of the following is an incorrect combination of organism with iots chromosome number in meiocyte and in ganete ?

Options

A. `{:("Name of organism", "Chromosome number in meiocyte", "Chromosome number in gamete"),("Onion", " "24, " "12):}`
B. `{:("Name of organism", "Chromosome number in meiocyte", "Chromosome number in gamete"),("Ophioglossum", " "1260, " "630):}`
C. `{:("Name of organism", "Chromosome number in meiocyte", "Chromosome number in gamete"),("Human beings", " "46, " "23):}`
D. `{:("Name of organism", "Chromosome number in meiocyte", "Chromosome number in gamete"),("Fruit fly", " "8, " "4):}`

Explanation

To determine which of the given combinations of organisms with their respective chromosome numbers in meiocytes and gametes is incorrect, we will analyze each organism's chromosome count.

### Step-by-Step Solution:

1. **Identify the Organisms and Their Chromosome Numbers**:
- We have four organisms: Onion, Ophioglossum, Humans, and Fruit Fly.
- For each organism, we need to check the chromosome number in meiocytes (2n) and gametes (n).

2. **Onion**:
- Given: Meiocyte = 24, Gamete = 12
- Correct: Meiocyte (2n) should be double the gamete (n).
- Calculation: If gamete = 12, then meiocyte should be 2 * 12 = 24.
- **Conclusion**: This combination is correct.

3. **Ophioglossum**:
- Given: Meiocyte = 1260, Gamete = 630
- Correct: Meiocyte (2n) should be double the gamete (n).
- Calculation: If gamete = 630, then meiocyte should be 2 * 630 = 1260.
- **Conclusion**: This combination is correct.

4. **Humans**:
- Given: Meiocyte = 46, Gamete = 23
- Correct: Meiocyte (2n) should be double the gamete (n).
- Calculation: If gamete = 23, then meiocyte should be 2 * 23 = 46.
- **Conclusion**: This combination is correct.

5. **Fruit Fly**:
- Given: Meiocyte = 8, Gamete = 4
- Correct: Meiocyte (2n) should be double the gamete (n).
- Calculation: If gamete = 4, then meiocyte should be 2 * 4 = 8.
- **Conclusion**: This combination is correct.

### Final Conclusion:
After analyzing all the combinations, it appears that the first combination (Onion) was incorrectly stated in the video transcript. The correct chromosome numbers for Onion should be meiocyte = 24 and gamete = 12, which is indeed correct. Therefore, there seems to be no incorrect combination based on the provided data.