The bivalent has two chromosomes and four chromatids, with one chromosome coming from each parent. In prometaphase I, the nuclear membrane disappears. One kinetochore forms per chromosome , and the chromosomes attached to spindle fibers begin to move. In metaphase I, bivalents, each composed of two chromosomes, align at the metaphase plate...
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The orientation is random, with either parental homologue on a side. This means that there is a 50-50 chance for the daughter cells to get either the mother's or father's homologue for each chromosome. In anaphase I, chiasmata separate. Chromosomes, each with two chromatids, move to separate poles. Each of the daughter cells is now haploid (23 chromosomes), but each chromosome has two chromatids...
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PLant Cells Furthermore, a generalized eukaryotic plant cells also contains cytoplasm, which is a fluid with dissolved substances, and mitochondria, which produce cellular energy (ATP) and has folding convolutions called cristaes...	3 / 631
Cells And lastly there are vacuoles which have a variety of storage functions. The plant cell is similar in most ways. The only really big differences between the plant cell and the animal cell are as follows...	2 / 359
cells A vacuole is a single membrane enclosing a fluid-filled space and is used for storage of food or water regulation. The cytoplasm is the material contained with in the plasma membrane of a cell excluding the nucleus...	2 / 387
Cells By modeling the growth rate of the surface area and volume of a sphere on a linear graph its easily discernible that as the size of the sphere increases the ratio of surface area to volume dramatically decreases until finally the volume of the sphere surpasses the surf ace area...	2 / 334