Examlex
Explain the frequency theory of hearing.What is one limitation of the frequency theory?
Ovum
A mature female reproductive cell, especially of a human or other animal, which can fuse with a male gamete in sexual reproduction.
Sperm
Male reproductive cells or gametes involved in sexual reproduction, which can fertilize female gametes (ova) to produce offspring.
Embryonic Period
Occurs from about 2 to 8 weeks after pregnancy, in which rapid structural development takes place.
Blastocyst
A stage of early embryonic development in mammals, characterized by a spherical structure with an outer layer of cells and a fluid-filled cavity.
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