So, the correct answer is ‘Pairing of homologous chromosomes. ‘
Which of the following occurs during meiosis?
Synapsis and crossing-over occurs is the correct answer. Mitosis and meiosis are the two methods of replication of cells. Former is called equational devision while latter is called reducational division. Synapsis formation and crossing over occurs only during meiosis, because the method takes place only in sex cells.
Which of the following occurs during meiosis quizlet?
Which of the following occurs during meiosis? Haploid nuclei with unpaired chromosomes are produced from diploid parent nuclei with paired chromosomes.
What events occurs during meiosis I?
Meiosis I ends when the chromosomes of each homologous pair arrive at opposing poles of the cell. The microtubules disintegrate, and a new nuclear membrane forms around each haploid set of chromosomes. The chromosomes uncoil, forming chromatin again, and cytokinesis occurs, forming two non-identical daughter cells.
What will happen during meiosis?
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. … Meiosis begins following one round of DNA replication in cells in the male or female sex organs.
What event occurs during meiosis I and meiosis II quizlet?
In telophase I and cytokinesis, this cell divides into two cells, while the nucleus is formed around chromosomes of each cell. Therefore, in the first phase, the diploid cell is divided into two haploid cells. Meiosis II consists of prophase II, metaphase II, anaphase II, telophase II and cytokinesis.
What are alleles quizlet?
An allele is an alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome. These DNA codings determine distinct traits that can be passed on from parents to offspring.
Does meiosis occur in all cells?
Meiosis is essential for sexual reproduction and therefore occurs in all eukaryotes (including single-celled organisms) that reproduce sexually. … Meiosis does not occur in archaea or bacteria, which reproduce via asexual processes such as mitosis or binary fission.
Which three processes occur during meiosis quizlet?
Name 3 ways in which meiosis produces genetic variation. Independent segregation of homologous chromosomes. Crossing over and recombination. Formation of chiasmata.
What is meiosis important?
Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.
What events occur during meiosis I and meiosis II?
In meiosis I, homologous chromosomes separate, whereas in meiosis II, sister chromatids separate. Meiosis II produces four haploid girl cells, whereas meiosis I produces a pair of diploid female offspring cells. Genetic recombination or crossing overonly happens in meiosis I.