Telophase II, meiosis? I need help?

Question

i dont understand the meaning of "In telophase II, the nuclear envelope reappears at each pole and cytokinesis occurs. The end result of meiosis is four haploid cells each cell contains half the number of chromosomes, and each chromosome consists of only one chromatid. Later in interphase, a second chromatid in each chromosome is replicated, but the cell will still have only half the number of chromosomes."

I dont understand how each cell contain half the number of chromosomes and I dont understand four haploid cells, why not 4 diploid cells? what makes it diploid?. For some reason I understand Mitosis 100% but meiosis get me stuck only at telophase II. Can you help me?

Answer 1

To understand why haploid cells result you must understand Meiosis I. In meiosis I chromosome pairs (two X-shaped) line up on the division plate during metaphase. One haploid set of replicated (one X-shaped) chromosomes is segregated to each pole. In meiosis II the haploid number of chromosomes (one X-shaped) line up on the metaphase plate. One chromatid (half of the X) is segregated to each pole.

So from one pair (diploid) of X-shaped (replicated) chromosomes four cells (haploid) containing I-shaped (unreplicated) chromosomes results.

Answer 2

first off, mitosis occurs in processes such as growth of an individual where more cells are needed and therefore needs to be exactly the same as that of the parent cell. meiosis, on the other hand, occurs in producing gametes or sex cells. they have to be haploid so that when 2 sex cells meet during fertilization it would produce a diploid cell from which an organism will grow from. people are diploids.
now, meiosis is divided into 2 parts, meiosis 1 and meiosis 2. in meiosis 1, it starts with 46 chromosomes (23 pairs) with 2 chromatids each. the chromosomes group together at two poles each pole having 23 chromosomes (with each pair represented in both poles). at the end of the meiosis 1, the daughter cells will have 23 chromosomes each with 2 chromatids each.but at this point, the daughter cells have not separated yet.
in meiosis 2, the 23 chromosomes of each pole align themselves as in mitosis and the chromatids of each chromosome separate such that what happens is that there are four sets of 23 chromosomes with 1 chromatin each. it is at telophase 2 that the daughter cells are divided and that is called cytokinesis.