Answer: C. Metaphase of mitosis.
Step-by-step explanation :
- A karyotype of a person reveals the number and the structure of the chromosomes present in his cell.
- For making a karyotype a somatic cell is chosen which is arrested in the metaphase stage of mitosis.
- The metaphase stage of mitosis is chosen because at this stage:
A) A complete set of chromosomes is present (cell is diploid).
B) The chromosomes are most condensed at this stage.
- Due to these reasons, the metaphase stage is selected to prepare a karyotype.