Question 30

Sex cells undergo meiosis to reproduce.

Meiosis is the specialized form of cell division that reduces the chromosome number by half, resulting in the formation of gametes, or sex cells. This process is essential for sexual reproduction and ensures genetic diversity.

A) Meiosis

Meiosis is the correct answer as it specifically refers to the process that sex cells undergo to reproduce. It involves two rounds of division and results in four non-identical cells, each with half the number of chromosomes, which is crucial for maintaining the species' chromosome number across generations.

B) Cytokinesis

Cytokinesis is not the correct answer because it refers to the process of cytoplasmic division that occurs after mitosis or meiosis, rather than a process that specifically leads to the reproduction of sex cells. While it is an important part of cell division, it does not describe how sex cells are formed.

C) Fission

Fission is incorrect as it describes a form of asexual reproduction where an organism splits into two or more parts, each of which can develop into a new organism. This process is not related to the reproduction of sex cells, which require meiosis for genetic variation.

D) Mitosis

Mitosis is also not the correct answer because it is a type of cell division that results in two identical daughter cells, maintaining the same chromosome number as the parent cell. Unlike meiosis, mitosis does not create gametes and is not involved in the reproduction of sex cells.

Conclusion

Meiosis is definitively the correct answer as it is the only process that leads to the formation of sex cells through a reduction in chromosome number and increased genetic diversity. All other options either describe different processes of cell division or reproduction that do not apply to sex cell formation.