Series 1: playing of 7
Explanation of the terms: Fertilization, implantation, placenta, gestation and parturition
Identical and fraternal twins: meaning and differences only.
Describe, in brief, the changes the uterus undergoes
(i) to receive the zygote.
(ii) if zygote is not formed
List any four methods of contraception used by humans. State in brief two advantages of adopting such preventive methods.
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