Differences:
# Cells undergoing mitosis divide once, cells undergoing meiosis divide twice. # Mitosis is for cell replication, meiosis is for genetic recombination and to produce reproductive cells # Meiosis does not produce exact copies, mitosis does # Crossing over occurs in meiosis # Mitosis produces diploid cells, meiosis produces haploid Similarities:
# Both duplicate the organism's genome once, before any duplication occurs
# Metaphase plates occur in both # Centrioles exist in both # They share the same basic steps for division # Both occur in eukaryotic cells
First of all, mitosis happens in the body to replicate cells in the skin (for example). Meiosis happens in the sex organs, it makes gametes (sex cells). In mitosis, the one parent cell and the two daughter cells are genetically identical and they have the same number of chromosomes. In meiosis, the one parent cell and the four daughter cells are not genetically identical. The parent cell will have the full number of chromosomes but the daughter cells will only have half the normal number of chromosomes.
Centrioles give rise to spindle fibers that help with chromosome movement during cell division. They are important for organizing and separating chromosomes during mitosis and meiosis.
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.
spermatogonia. These are the diploid cells found in the testes that undergo mitosis followed by meiosis to produce haploid sperm cells.
both the haploid and diploid generations
Here are two; mitosis ends in cell division while meiosis ends with gamete division, and mitosis ends with a chromosome number of 2N while meiosis ends with a chromosome number of 1N - give us the third.
Mitosis occurs in somatic cells to generate new cells for growth and repair throughout the body. For example, mitosis occurs in skin cells to replace old or damaged skin cells. Meiosis occurs in reproductive cells to produce gametes (sperm and eggs). For example, meiosis occurs in the testes to produce sperm cells in males and in the ovaries to produce egg cells in females.
First of all, mitosis happens in the body to replicate cells in the skin (for example). Meiosis happens in the sex organs, it makes gametes (sex cells). In mitosis, the one parent cell and the two daughter cells are genetically identical and they have the same number of chromosomes. In meiosis, the one parent cell and the four daughter cells are not genetically identical. The parent cell will have the full number of chromosomes but the daughter cells will only have half the normal number of chromosomes.
Centrioles give rise to spindle fibers that help with chromosome movement during cell division. They are important for organizing and separating chromosomes during mitosis and meiosis.
Mitosis produces two Diploid Cells while Meiosis produces four haploid cells. The purpose of Mitosis produces new body cells and does not allow for genetic variation, while meiosis allows genetic variation through multiple processes. Meiosis produces sex cells (sperm) , which are key in reproduction of multi-cellular organisms. Each new cell contains half of the number of chromosomes. Meiosis has 2 cellular divisions, while mitosis only has one. They are both necessary to support life, and they both produce Diploid cells in the first division. Also, from a similar topic in Yahoo Answers (Which has a much better explanation) : Mitosis is a type of cell division to produce 2 X genetically identical diploid (2n) cells for growth and repair. Mitosis occcurs in somatic cells (normal body cells. Prior to mitotic division DNA is replicated to produce two identical chromatids attached by a centromere. This is essential so that each new daughter cell formed receives one copy of each chromosome. (One division) Meiosis only occurs in the sex organs to produce 4 X haploid (n), genetically different, gametes for sexual reproduction. Meiosis consists of two divisions: Meiosis I halves the number of chromosomes to give 2 X haploid cells. Meiosis II doubles the number of cells to give 4 X haploid gametes. Two processes during meiosis I increase variation . In prophase I homomolgous chromosomes cross over at points called chiasmata and exchange genetic material. In metaphase I the chromosomes line up along the equator in pairs. This is called random assortment where maternal and paternal chromosomes are arranged at random. Both of these increase variation to produce four genetically different gametes at the end of meiosis II DNA replication only occurs once, before Meoisis I.
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.
spermatogonia. These are the diploid cells found in the testes that undergo mitosis followed by meiosis to produce haploid sperm cells.
both the haploid and diploid generations
I cannot use mitosis in a sentence.
During meiosis crossing over takes place between homologous chromosomes. Thus genetic material get interchanged and 50 % new combinations are obtained after each meiotic cell division. Thus, meiosis brings heritable variation in the gametes.
Meiosis occurs because it provides a way for genetic variability, since it would be unfavorable for an organism's offspring to have the same weaknesses that it did, as opposed to binary fission or mitosis. In mitosis, the parent and daughter cell will be identical if no genetic mutations occur (which most cells have built-in self-repair mechanisms).
Mitosis requires only a single parent. However, when the mitosis produce they give four daughter cells. Mitosis has two cell divisions.