<p>1.What is the chromosome number of parent cells for mitosis and meiosis?
2.What is the number of DNA replications in mitosis and meiosis?
3.What is the number of divisions in mitosis and meiosis?
4.What is the number of daighter cells produced from mitosis and meiosis?
5.What is the chromosome number of the daughter cells produced from mitosis and meiosis?
6.What is the purpose/function of mitosis and meiosis?</p>
<p>I will give you guys my answers and correct me, if they are wrong!
For 1, I think it is 46 for both mitosis and meiosis!
For 2, I think it is 1 for both of them!
For 3, I think it is 4 for mitosis and 8 for meiosis!
For 4, I think it is 2 for mit. and 4 for mei.!
For 5, I think it is 46 for mit. and 23 for mei.!
For 6, I think it is to duplicate the same genetically identical cells for mit. and for meiosis, it is to produce daughter cells that are genetically distinct from the parent cell.</p>
<p>[ol]
[<em>]46 is only true for humans! other organisms have anywhere from one to several hundred chromosomes in their cells.
[</em>]There are no DNA replications during mitosis or meiosis. Replication occurs during the S phase of the cell cycle.
[<em>]Question is ambiguous. There is one telophase in mitosis, and two in meiosis.
[</em>]Maximum number of daughter cells in mitosis is 2 and in meiosis is 4. During oogenesis in mammals, only one daughter cell is produced. When a yeast divides by "budding," mitosis only produces one "daughter" cell.
[li]Mitosis produces identical cells, so same number of chromosomes. Meiosis is reduction division, so half the number of chromosomes.</p>[/li]
<p>Those questions are all asking for pretty useless information. Question 6 is more important.</p>
<p>[li]The function of meiosis is to produce cells containing half the chromosome number of the parent cell. Because the meiotic process includes crossing-over, new genetic combinations are found in the haploid daughter cells. These daughter cells can become gametes (they don't always) and two gametes can fuse to create a zygote genetically different than either parent. The most useful outcome of meiosis is sexual reproduction leading to genetic variability, but the process itself simply reduces the number of chromosomes in half. In many plant species, that means going from a 6n cell to a 3n gamete, or a 4n cell to a 2n gamete, as polyploidy is very common in plants.[/li][/ol]</p>
<p>Can anyone help me answer this question "Is it accurate to describe progeria as accelerated aging? Explain."
See, I know that progeria doesn't have all the characteristics of aging , but is it accurate to describe as accelerated aging?</p>