Question
Three primary germ layers are ____.
Answer
Three primary germ layers are ectoderm, mesoderm, and endoderm.
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____ is the joining of a sperm and an ovum.
Fertilization is the joining of a ____.
Fertilization occurs in the ____ of the fallopian tube.
The sperm uses ____ enzymes to penetrate the corona radiata and zona pellucida.
Once the sperm contacts the oocyte’s plasma membrane, the sperm establishes the a____nd injects its pronucleus.
Once the sperm contacts the oocyte’s plasma membrane, the sperm establishes the acrosomal apparatus and injects its ____.