These circles represent cells. The first cell is going through meiosis, and the 2 meiotic divisions are shown. Draw 4 chromosomes in the first cell. Two of these will be longer, and are homologs to each other; and two will be shorter and these will also be homologous to each other. Each pair of chromosomes will have exchanged parts due to “crossing over.” (Show crossover by shading or coloring, starting in the very first circle.) Follow the chromosomes through the 2 divisions.
Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
These circles represent cells. The first cell is going through meiosis, and the 2 meiotic divisions are shown. Draw 4 chromosomes in the first cell. Two of these will be longer, and are homologs to each other; and two will be shorter and these will also be homologous to each other. Each pair of chromosomes will have exchanged parts due to “crossing over.” (Show crossover by shading or coloring, starting in the very first circle.) Follow the chromosomes through the 2 divisions.
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