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:
Why does the
recombination frequency of
genes vary with the distance
between them in the
chromosome?
The genetic material exchange between the two homologous chromosomes and that produces recombinant chromosome is called chromosomal crossover. It is the genetic recombination final phase and occurs in the prophase I pachytene stage during synapsis. The synapsis begins before the initiation of the synaptonemal complex.
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