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The upcoming discuss will update you about the difference between spermatogenesis and oogenesis.
Difference # Spermatogenesis:
1. Growth phenomena in nucleus and cytoplasm are not pronounced in spermatocytes.
2. Each spermatocyte produces four functional spermatids of equal size.
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3. During maturation,
(i) Nucleus remains small which may contract during spermiogenesis into a compact elongated mass,
(ii) Nuclear fluid is small in amount,
(iii) Nuclear maturation takes place before cytoplasmic differentiation.
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4. Nucleus and cytoplasm become polarised along a long anteroposterior axis. Nucleus occupies almost the anterior end.
5. Little quantity of food substances is stored within cytoplasm.
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6. Considerable quantity of cytoplasm is discarded and some Golgi materials, centrioles and mitochohdria are retained.
7. Specific membranes are not formed around the sperm.
8. Capable of producing androgammic substances helping in fertilization.
9. Active metabolic state is assumed before fertilization.
Difference # Oogenesis:
1. Growth phenomena are much pronounced in the oocytes. It involves both nucleus and cytoplasm.
2. Each oocyte produces one large functional ootid and three small abortive polocytes.
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3. (i) Nucleus enlarges greatly,
(ii) Nuclear fluid increases considerably,
(iii) Nuclear maturation takes place simultaneously with cytoplasmic differentiation.
4. Usually the nucleus is shifted towards the animal pole, wlale the cytoplasmic materials become polarised towards vegetal pole.
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5. Considerable quantity of food substances (deutoplasm) is stored which is composed of carbohydrates, fats and proteins.
6. Cytoplasm is increased with the formation of basis cytoplasmic stuffs.
7. Specific membranes are formed around the egg.
8. Capable of producing gynogammic sub stances which help the fertilization process.
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9. Metabolic processes are slowed down before fertilization event.
