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.

Question

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. (A) Only II (B) III and IV (C) Only I (D) II and IV

Tardigrade Admin · Accepted Answer

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

Only II

III and IV

Only I

II and IV

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

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