Question

Which of the following is not the characteristic of mitosis?
A. Leptotene
B. Zygotene
C. Pachytene
D. All of the above

Answer 1

Hint: The cell division occurs as mitosis and meiosis. The mitosis occurs in four phases only while the meiosis involves a total eight phases. It includes meiosis I and meiosis II. The prophase I include five stages which do not occur during mitosis.

Complete answer:
Cell division is a very important process for the development and growth of individuals. Mitosis and Meiosis are two processes for cell division. Mitosis occurs in the body in order to make copies. It involves two steps that are karyokinesis and cytokinesis. Karyokinesis is the division of the nucleus while the cytokinesis is the division of the cytoplasm. Mitosis includes four stages that are: prophase, metaphase, anaphase, telophase. It does include any sub-stages.
Meiosis is reductional division which results in the haploid number of chromosomes in the daughter cells. Meiosis I and Meiosis II are two stages to meiosis. Meiosis involves much the same mechanism as mitosis. Meiosis I includes prophase I, Metaphase I, Anaphase I and Telophase I. The prophase I of the meiosis occurs in five steps. These five steps or sub-stages are: Leptotene(formation of thin threads), zygotene(paired threads), pachytene (packing and synapses of chromosomes), Diplotene (chiasmata formation), Diakinesis(chromosomes condenses).
From the above information, it is known that Leptotene, Zygote, Pachytene are not the characteristics of mitosis.

Hence, the correct answer is option (D).

Note: The mitotic cell division forms two daughter cells. These are the copies of the parents. They contain the same number of chromosomes as parents have. In meiosis division, four daughter cells are formed at the end of the meiosis II. It occurs during the gamete formation. Gametes contain the haploid number of chromosomes.