Question

The difference between mitosis and meiosis I is

• A. Sister chromatids separate in mitosis, whereas homologous chromosomes separate in meiosis I
• B. The nuclear membrane is absent during mitotic metaphase, but not in meiotic metaphase
• C. The DNA is double helical in meiosis I but not in mitosis
• D. Unlike in mitotic metaphase, chromosomes do not align at the equatorial plate in meiosis I

Hint:

Mitosis = Equational division → chromatids separate. Meiosis I = Reductional division → homologues separate.

Answer 1

The Correct Option is A

Step 1: Compare the segregation events.
In mitosis, sister chromatids separate at anaphase, producing genetically identical daughter cells.
In meiosis I, homologous chromosomes separate, while sister chromatids remain together — reducing chromosome number by half.
Step 2: Identify the key distinction.
This reductional division (meiosis I) versus equational division (mitosis) defines the difference.
Step 3: Conclusion.
Hence, the correct statement is (A).