What happens during meiosis part 1 and 2. What is the difference between meiosis and mitieos. Differencces.?

Answer 1

Mitosis is when a cell splits in two and then forms two fully functioning cells, with the full number of chromosomes for that organism. ie, a human cell with 46 chromosomes copies its chromosomes, then splits into two cells with 46 chromosomes each.

Meiosis is when a cell splits into two first, same as mitosis; then in two again WITHOUT copying it's chromosomes. In humans, you start with a cell with 46 chromosomes, then it splits and first gives you two cells with 46 chromosomes each. Then both of the new cells split again, but you end up with "haploid" cells this time, meaning they have HALF the full number of chromosomes. So in humans you would have 4 cells, with 23 chromosomes each.

Meiosis happens to make sex cells, like eggs and sperm, so they can come together and make a full cell with 23 from egg, 23 chromosomes from sperm = new cell with 46 chromosomes.

I think meiosis 1 is the first split, cell w/ 46 chromosomes copies into two cells with 46 each. Then I think Meiosis 2 is the second split, when the two cells split into two (4 total), each containing 23 chromosomes.

Good luck :-)

Answer 2

You can get detail description of meiosis in this web page
http://en.wikipedia.org/wiki/Meiosis

Mitosis is the process by which a cell separates its duplicated genome into two identical halves. It is generally followed immediately by cytokinesis which divides the cytoplasm and cell membrane. This results in two identical daughter cells with a roughly equal distribution of organelles and other cellular components. Mitosis and cytokinesis together is defined as the mitotic (M) phase of the cell cycle, the division of the mother cell into two daughter cells, each the genetic equivalent of the parent cell. Mitosis occurs exclusively in eukaryotic cells. In multicellular organisms, the somatic cells undergo mitosis, while germ cells — cells destined to become sperm in males or ova in females — divide by a related process called meiosis.

Because the chromosomes of each parent undergo genetic recombination during meiosis, each gamete, and thus each zygote, will have a unique genetic blueprint encoded in its DNA. In other words, meiosis is the process that produces genetic variation.