7th grade The eight steps of meiosis?

Answer 1

• Prophase I: chromosomes start to condense and become visible
• Metaphase I: homologous chromosomes line up at equatorial plate
• Anaphase I: homologous chromosomes separate and move to diferent poles
• Telophase I: one set of chromosomes arrive at each pole
• Prophase II: chromosomes condense again
• Metaphase II: individual chromosome line up at equatorial plate
• Anaphase II: centromere divides, and chromosomes (from chromatids) move to different poles
• Telophase II: one set of chromosome arrive at each pole.

Answer 2

Meiosis is a type of cell division that results in the formation of gametes (sperm and egg cells). The eight steps of meiosis are: interphase, meiosis I (prophase I, metaphase I, anaphase I, telophase I), and meiosis II (prophase II, metaphase II, anaphase II, telophase II). Meiosis results in four genetically unique daughter cells, each with half the number of chromosomes as the original cell.

Answer 3

Meiosis occurs when human cells reproduce. I'm not 100% sure of the accuracy here, but this is sure to serve as a basic outline.

Prophase I - chromosomes link together to form a tetrad shape. Crossing over of genes is possible here. The chromatin condense into chromosomes, the nucleolus disappears, the nuclear membrane disassembles, and the spindle apparatus forms.

Metaphase I- tetrads line up on the equator of the spindle apparatus, the fibers attach to opposite sides of the centromere and the spindle fibers attache to the kinetochore fibers.

Anaphase I - Tetrads separate and are drawn to opposite poles by the spindle fibers, centromere remain intact.

Telophase I - Chromosomes reach poles of respective spindles. One set of chromosomes in each of the two cells. Chromosomes uncoil, nucleolus reforms, some cells have division of centrioles!:)

Prophase II- Nuclear envelope redissolves, spindle fibers reform, chromatin condenses, centrioles dived, kinetochore fibers form.

Metaphase II - Chromosomes migrate to equator of spindle. Spindle fibers attach to kinetochore fibers.

Anaphase II - Centromeres split, chromosomes are segregated into opposite sides of the cell.

Telophase II- chromosomes reach poles, nuclear envelopes reform, chromosomes uncoil, nucleolues reforms, cytokinesis occurs.

Yay! Now we have four cells, each with half as many chromosomes as the original cell!:)