Which type of placenta is present in the early human embryo?
Discoidal
Diffuse
Zonary
Cotyledonary
Metadiscoidal – diffuse first then discoidal.
The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is
Extra embryonic membrane amnion is not found in amphibians because
Sperm lysins contains
In macro and telolecithal eggs site of amphimixis lies in the
Drugs such as Thalidomide taken by woman in first trimester of pregnancy cause all the following malformations in the developing embryo, except
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