Put the following levels of chromosome organization in order from least complex (least packaged form) to most complex (most packaged form). DNA strand    30-nm fiber       Heterochromatin        Euchromatin

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A: Meiosis  It is a kind of cell division where the number of chromosome reduced.

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: