In mammalian sperm, spirally arranged mitochondria are present in
Head portion
Middle piece
End piece of the tail
Principal piece of tail
It's Obvious
Which of the following is correct statement
If both ovaries are removed from pregnant human female in first trimester of pregnancy then it will lead to
Umbilical cord in mammals, contains
Rapid secretion of $LH$ in ovulation causes
Cu ions released from copper- releasing Intra Uterine Devices $(IUDs)$
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