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Why do the 2 daughter cells in mitosis have to divide again in meiosis?
Wiki User
∙ 13y ago
The usual somatic gene complement number = 2N. Upon genomic replication the gene complement number is 4N. Somatic Cell division 'reduces' the number 'back to' 2N. Gametic Cells, egg and sperm, need to "divide again" in meiosis to further reduce the gene complement number down to the required 1N [again, for gametic cells only].
Wiki User
∙ 13y ago
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How many times does the cell divide during mitosis?
In mitosis the cell divides once. The two cells, in some cases, may then divide again, but mitosis is just one cell dividing into two cells.
Does the nucleus divide in meiosis 1 and again in meiosis 2?
Yes :)
What are the roles of mitosis and meiosis in a eukaryotic life cycle?
Mitosis results in growth. During mitosis a cell becomes two. Genetically, the two daughter-cells are identical to each other and to the original cell. In single-celled organisms the daughter-cells separate. But in multicellular species the cells remain together. Mitosis therefore increases the number of cells in a multicellular organism. This makes differentiation possible. In humans, for example, some cells become blood cells, some muscle tissue, some light receptors at the back of the eye, and so on. Meiosis halves the chromosome number. In the course of meiosis a cell divides once, half its chromosomes going into each daughter-cell, and then each of these daughter-cells divides again in a manner rather like mitosis, so that there is no further change in chromosome number. Meiosis is essential in any species that reproduces sexually. Sexual reproduction involves a combining of two gametes in the process of fertilization. Fertilization doubles the chromosome number. So there has to be one point in the life-cycle at which the number is halved again. All sexually reproducing organisms must have one meiosis and one fertilization in each life-cycle. The relative timing of meiosis and fertilization differs in different species. Humans, like many but not all animals, leave meiosis until gamete formation. This means that every cell in the life-cycle is diploid except the gametes. In plants meiosis always forms spores. These divide by mitosis to form a number of haploid cells (very few in flowering plants, but more in simpler plants). In some algae and fungi the zygote divides by meiosis, so that the zygote is the only diploid cell in the life-cycle.
Which cell divides once in mitosis?
Mitosis
What is the result of mitosis?
The result of mitosis(or offspring)is two daughter cells.
Process by which cell divides into two daughter cells?
This is meiosis, not to be confused with mitosis (which is non sexual) - remember it like this: toes arent sexy!Meiosis is when a zygote divides to form 2 cells, which then divide again to form 2 daughter cells. These cells are not identical to the original zygote.
How many times does the cell divide during mitosis?
In mitosis the cell divides once. The two cells, in some cases, may then divide again, but mitosis is just one cell dividing into two cells.
Does the nucleus divide in meiosis 1 and again in meiosis 2?
Yes :)
What is the extra step in meiosis than mitosis?
In mitosis the chromosomes duplicate and the cell splits apart. But in meiosis, the cell does the same thing but this time, the daughter cells split again without duplicating the chromosomes. This causes those cells to have only half the amount of chromosomes. Hope i helped!
Does the cell divide in two during mitosis?
No, because gametes do not divide. Specific cells called "germ cells" give rise to gametes through a process called meiosis. After that gametes do not divide again and simply wait until an opportunity arises in which they can pair up with their other gamete cell and form a zygote.
How does meiosis happen?
you take a daughter cell and mitoses happens again but it called meiosis
What are the roles of mitosis and meiosis in a eukaryotic life cycle?
Mitosis results in growth. During mitosis a cell becomes two. Genetically, the two daughter-cells are identical to each other and to the original cell. In single-celled organisms the daughter-cells separate. But in multicellular species the cells remain together. Mitosis therefore increases the number of cells in a multicellular organism. This makes differentiation possible. In humans, for example, some cells become blood cells, some muscle tissue, some light receptors at the back of the eye, and so on. Meiosis halves the chromosome number. In the course of meiosis a cell divides once, half its chromosomes going into each daughter-cell, and then each of these daughter-cells divides again in a manner rather like mitosis, so that there is no further change in chromosome number. Meiosis is essential in any species that reproduces sexually. Sexual reproduction involves a combining of two gametes in the process of fertilization. Fertilization doubles the chromosome number. So there has to be one point in the life-cycle at which the number is halved again. All sexually reproducing organisms must have one meiosis and one fertilization in each life-cycle. The relative timing of meiosis and fertilization differs in different species. Humans, like many but not all animals, leave meiosis until gamete formation. This means that every cell in the life-cycle is diploid except the gametes. In plants meiosis always forms spores. These divide by mitosis to form a number of haploid cells (very few in flowering plants, but more in simpler plants). In some algae and fungi the zygote divides by meiosis, so that the zygote is the only diploid cell in the life-cycle.
Which cell divides once in mitosis?
Mitosis
How does one cell divide?
Typically cells divide in a process called Mitosis. This process consists of four phases called Prophase, Metaphase, Anaphase, and Telophase. The result is two cells with nuclei identical to the original cell.In some cases, cells may divide in a process called Meiosis. This process is similar to Mitosis, but the cells then divide again. The result is four cells, each with a nucleus that is half the size of the original cell.
What stage happens before mitotis?
If my memory does server me correctly, I am pretty sure it's Meiosis. Then again i think that happens after Mitosis. >.<
What is the result of mitosis?
The result of mitosis(or offspring)is two daughter cells.
What is the different between prophase in mitosis and meiosis?
In metaphase I the tetrads are again arranged across the center by the movements of the kinetochores with the two centromeres opposite each other, but this time the sister chromatids will not be pulled apart as in mitosis.
