For fertilization to occur, what portion of the sperm must enter the ovum?
1. The entire sperm
2. Only the head
3. Only the tail
4. Either the head or the tail
2
Rationale:
1. Only the head of the sperm enters the ovum in a twofold process known as capacitation and acrosomal reaction.
2. Only the head of the sperm enters the ovum in a twofold process known as capacitation and acrosomal reaction.
3. Only the head of the sperm enters the ovum in a twofold process known as capacitation and acrosomal reaction.
4. Only the head of the sperm enters the ovum in a twofold process known as capacitation and acrosomal reaction.
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