What is the result of meiosis II?

Question

What is the result of meiosis II??  
A. Two secondary sex cells  
B. Four haploid daughter cells  
C. Two primary sex cells  
D. Duplication of primary sex cells

Accepted Answer

Correct Answer: (B)Four haploid daughter cells. 
Rationale: Meiosis II results in four haploid daughter cells.Meiosis is a two-stage division process that produces gametes (sex cells) for sexual reproduction. After meiosis I reduces the chromosome number from diploid (2n) to haploid (n), meiosis II separates the sister chromatids of each chromosome. This second division is similar to mitosis in mechanism, but it begins with haploid cells. The final outcome is four genetically unique haploid cells, each containing one complete set of chromosomes.A) Two secondary sex cellsSecondary sex cells (secondary spermatocytes in males or secondary oocytes in females) are produced at the end of meiosis I, not meiosis II. Meiosis I separates homologous chromosomes and produces two haploid cells. Meiosis II acts on these two cells to produce four total cells, so this option is incorrect.B) Four haploid daughter cellsThis is the correct answer. During meiosis II, each of the two haploid cells formed in meiosis I divides again. The sister chromatids are pulled apart, and each cell splits into two new cells. This results in a total of four haploid daughter cells.In males, these cells become spermatids, which later mature into sperm. In females, meiosis II produces one ovum and additional polar bodies. All of these cells contain half the chromosome number of the original parent cell and are genetically different due to crossing over and independent assortment.C) Two primary sex cellsPrimary sex cells (spermatogonia in males and oogonia in females) are diploid germ cells that exist before meiosis begins. They divide by mitosis and then enter meiosis I. They are not produced by meiosis II, so this option is incorrect.D) Duplication of primary sex cellsCell duplication of primary sex cells occurs through mitosis, not meiosis. Meiosis is a reduction and separation process designed to form gametes, not to duplicate cells. Therefore, this option is incorrect.ConclusionMeiosis II separates sister chromatids in two haploid cells, producing a total of four haploid daughter cells that can function as gametes in sexual reproduction. Therefore, the correct answer is B) Four haploid daughter cells.

What is the result of meiosis II?

A
Two secondary sex cells

B
Four haploid daughter cells

C
Two primary sex cells

D
Duplication of primary sex cells

Meiosis II results in four haploid daughter cells.

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What is the result of meiosis II?

A Two secondary sex cells B Four haploid daughter cells C Two primary sex cells D Duplication of primary sex cells

Meiosis II results in four haploid daughter cells.

Topic Flashcards

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Related Questions

A
Two secondary sex cells

B
Four haploid daughter cells

C
Two primary sex cells

D
Duplication of primary sex cells