Which of the following occurs in meiosis but not in mitosis? (2024)

FAQs

Which of the following occurs in meiosis but not in mitosis? ›

Synapsis

The daughter cells produced by mitosis are identical, whereas the daughter cells produced by meiosis are different because crossing over has occurred. The events that occur in meiosis but not mitosis include hom*ologous chromosomes pairing up, crossing over, and lining up along the metaphase plate in tetrads.

Which of the following occurs during meiosis but not during mitosis? Synapsis occurs. The pairing of hom*ologous chromosomes that only occurs during prophase I of meiosis is called synapsis.

Explanation: Crossing over is the only answer choice that does not occur during mitosis. Crossing over occurs during prophase I of meiosis and involves swapping of genetic information between hom*ologous chromosomes. This require the formation of tetrads, which does not occur during mitosis.

The difference between the two processes is that mitosis occurs in non-reproductive cells, or somatic cells, and meiosis occurs in the cells that participate in sexual reproduction, or germ cells.

summarized the unique events that needed to occur for the evolution of meiosis from mitosis. These steps are hom*ologous chromosome pairing, crossover exchanges, sister chromatids remaining attached during anaphase, and suppression of DNA replication in interphase.

Mitosis results in two nuclei that are identical to the original nucleus. Meiosis, on the other hand, results in four nuclei, each having half the number of chromosomes of the original cell. In animals, meiosis only occurs in the cells that give rise to the sex cells (gametes), i.e., the egg and the sperm.

Answer and Explanation: DNA replication does not occur during mitosis. During the cell cycle, in a phase known as S phase, all DNA of the cell is replicated in order to prepare for the condensation of chromosomes and the splitting of a parent cell.

Also meiosis is reductional division , the chromosomal number during meiosis is reduced to half while no such reduction in chromosomal number occurs during mitosis.

Answer. Meiosis produces four daughter cells while Mitosis does not.

Which process never occurs during mitosis? ›

Crossing Over is the phenomenon of genetic exchange between hom*ologous pair of chromosomes and is a characteristic feature of meiotic cell division. It does not occur in mitosis.

During meiosis I, hom*ologous chromosomes first pair with one another and then segregate to different daughter cells. Sister chromatids remain together, so completion of meiosis I results in the formation of daughter cells containing a single member of each chromosome pair (consisting of two sister chromatids).

Correct answer:

Explanation: The separation of sister chromatids is the only item of the answer choices that occurs in both mitosis and meiosis.

Pairing of hom*ologous chromosomes is called synapsis. Synapsis occurs only during meiosis.

Answer and Explanation:

After the completion of meiosis, each daughter will receive only one hom*ologous chromosome. The separation of hom*ologous chromosomes does not occur in mitosis.

The pairing of hom*ologous chromosomes to form bivalents occurs in meiotic cell division. This is absent in mitosis.

During mitosis, all the chromosomes behave independently while during meiosis, hom*ologous chromosomes pair up through synapsis and form bivalents in zygote substage of prophase – I, then in pachytene substage, crossing over occurs between hom*ologous chromosomes and during diplotene substage of prophase-I of meiosis ...

During prophase I, differences from mitosis begin to appear. As in mitosis, the chromosomes begin to condense, but in meiosis I, they also pair up. Each chromosome carefully aligns with its hom*ologue partner so that the two match up at corresponding positions along their full length.

hom*ologous pairs of cells are present in meiosis I and separate into chromosomes before meiosis II. In meiosis II, these chromosomes further separate into sister chromatids. Meiosis I includes crossing over or recombination of genetic material between chromosome pairs, while meiosis II does not.