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  • noun Plural form of oogonium.

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  • ~ Primitive differentiated female gametes which give rise to oocytes. Plural of oogonium.

    ~ Immature ova (singular: ovum). It is a female gametogonia (singular: gametogonium).

    ~ They are formed in large numbers by mitosis early in fetal life from primordial germ cells, which are present in the fetus between weeks 4 and 8. Oogonia are present in the fetus between weeks 5 and 30.

    ~ Oogonia are also the female reproductive structures in certain thallophytes, and are usually rounded cells or sacs containing one or more oospheres.

    January 18, 2009