Following fertilization, if a ball of embryonic cells splits into two masses before differentiation has begun, ________ twins result.
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Q61: Match the special structures of the fetal
Q62: Match the special structures of the fetal
Q63: For sperm to be able to penetrate
Q64: Insertion of a thin tube through the
Q65: The formation of the _ cavity and
Q67: During labor, full dilation of the cervix
Q68: Match the special structures of the fetal
Q69: Adolescence is marked by maturation of the
Q70: Match each organ to the germ layer
Q71: The spontaneous ending of a pregnancy that
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