How many linkage groups are present in maize (Zea mays L.)?
Show Hint
- Number of linkage groups = Haploid chromosome number (n).
- Maize: 2n = 20, n = 10, so 10 linkage groups.
- Human: 2n = 46, n = 23, so 23 linkage groups.
- 10
- 20
- 12
- 13
The Correct Option is A
Solution and Explanation
This question tests knowledge of linkage groups and chromosome numbers.
Step 2: Detailed Explanation:
The number of linkage groups in an organism is equal to its haploid chromosome number (n).
Maize (Zea mays) has a haploid chromosome number of 10 (n = 10).
Thus, there are 10 linkage groups in maize.
Other options:
- 20 (B): Diploid number (2n = 20).
- 12 (C): Not correct for maize.
- 13 (D): Not correct for maize.
Thus, maize has 10 linkage groups.
Step 3: Final Answer:
Thus, the number of linkage groups in maize is 10, which corresponds to option (A).
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