We encourage you to focus in particular on the events that occur during prophase I. We’ve provided a series of links below to articles that provide an in-depth view of the steps involved in mitosis and meiosis. Meiosis produces haploid cells with new allele combinations different from those of either parent thanks in large part to the events that occur during meiosis I. During prophase I of meiosis I, homologous chromosomes (i.e., the two copies of each chromosome inherited from each parent) pair with each other and recombine by crossing over, leading to new combinations of alleles. Meiosis I is the reductional division step during which the number of chromosomes is reduced by half, and meiosis II is an equational division step that resembles mitosis. As we mentioned, mitosis is an equational form of cell division, and meiosis is a reductional form of cell division. Now, let’s briefly focus on some of the key differences between mitosis and meiosis. The quick answer to your question is that meiosis, with its two divisions, requires more energy than mitosis. Meiosis I consists of prophase I, metaphase I, anaphase I, telophase I, and interkinesis meiosis II consists of prophase II, metaphase II, anaphase II, telophase II, and cytokinesis. The two meiotic divisions are conveniently referred to as meiosis I and meiosis II, and they are subdivided divided into different phases. During meiosis, a diploid germ cell undergoes two cell divisions to produce four haploid gamete cells (e.g., egg or sperm cells), which are genetically distinct from the original parent cell and contain half as many chromosomes. In contrast, meiosis is considered a “reductional” form of cell division that occurs in diploid germ cells. As we mentioned in our previous answer, mitosis is divided into five phases: prophase, metaphase, anaphase, telophase, and cytokinesis. When a haploid cell undergoes mitosis, it produces two genetically identical haploid daughter cells when a diploid cell undergoes mitosis, it produces two genetically identical diploid daughter cells. Both haploid and diploid cells can undergo mitosis. During mitosis, a cell divides once to produce two daughter cells with genetic material identical to that of the original parent cell and to each other. Mitosis is considered an “equational” form of cell division - it occurs in cells that do not produce gametes (e.g., somatic cells). However, there are many important differences between these two cellular processes. Hello again Shikha, Both mitosis and meiosis are types of cell division that involve the segregation of chromosomes into daughter cells.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |