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प्रश्न
Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria
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उत्तर
In case of fertilisation of the ovum by a sperm, the corpus luteum persists and continues to secrete progesterone in the body thus maintaining its high levels. The presence of progesterone prevents the maturation of another ovum, thus temporally stopping the menstrual cycle.
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संबंधित प्रश्न
State the changes that take place in the uterus when Implantation of embryo has occurred
The site of maturation of human sperms is the
What is the scientific name of birth canal?
Name the organs which produce ova (or egg cells) in human females.
What is ovulation?
What is the function of the placenta?
Define the following:
Clone
Choose the Odd One Out:
Multiple Choice Question:
What will happen if the temperature of the scrotal sacs temporarily goes to about 2°C lower than body temperature?
Correct sequence in development is ______.
