Cell Division

The difference between asexual and sexual production is through the joining of cells. Sexual reproduction requires a union between two cells (sperm and ovum) whereas asexual reproduction requires no union between sex cells instead one cell divide into two

Mitosis occurs in somatic (body) cells whereas meiosis occurs in gamete cells (sex cells).

Interphase: DNA uncoils. Before mitosis begins the DNA makes a copy of itself suit that each new cell will have a complete set. Prophase: DNA condenses into chromosomes Metaphase: chromosomes lineup in the middle of the cell Anaphase: sister chromates are pulled apart and move to opposite ends of the cell Telephase: comments arrive at each pole the cell membrane pinches in dividing the cell into two Cytokinesis: the cell membrane to 5 completely forming two identical data cells each with the same amount chromosomes as the parent cell.

• DNA is uncoiled and not visible as chromosomes before meiosis begins. The DNA makes a copy of itself. • The DNA condenses into chromosomes. • Pairs of chromosomes exchanged sections of DNA and (therefore genes) by process called crossing over then they lineup at the middle of the cell. • Centromere of each chromosome move to opposite ends of a cell. The parent cell begins to divide. • The cell divides into two new cells each with half the original number of chromosomes. • Sister chromatids a port part and the cell device again. • For unique daughter cells are produced each with a half amount of the original number of chromosome.

Crossing over is a process in meiosis with chromosomes exchange sections of DNA it ensures that there will be a variation among the offspring

In mitosis the cell divides once whereas in meiosis the cell device twice.

Four daughter cells are produced in meiosis and two are produced in mitosis.