1. Tardigrade
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  3. Biology
  4. Regarding male pronucleus which among the following statement is correct? I. It is the sperm nucleus after entering the ovum at fertilisation. II. Both head and neck of sperm contribute to pronucleus formation. III. Male pronucleus contains mitochondria. IV. Sperm head contains pronucleus having diploid set of chromosomes.

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Q. Regarding male pronucleus which among the following statement is correct?
I. It is the sperm nucleus after entering the ovum at fertilisation.
II. Both head and neck of sperm contribute to pronucleus formation.
III. Male pronucleus contains mitochondria.
IV. Sperm head contains pronucleus having diploid set of chromosomes.

Human Reproduction

Solution:

Only statement I is correct regarding male pronucleus. Others statements are incorrect and can be corrected as
• Only the head of the sperm contributes towards pronucleus formation.
• Male pronucleus lacks mitochondria.
• Sperm head contains pronucleus having haploid set of chromosomes