Which of the following is incorrect about spermatogenesis?

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Steps involved in Spermatogenesis

Step 1	Spermatogonia (2n = 46) are present in the inside wall of seminiferous tubules. Spermatogonium divides mitotically to increase in number.
Step 2	Some spermatogonia (termed as primary spermatocytes) periodically undergo meiosis. A primary spermatocyte completes meiosis-I (reduction division) and gives rise to 2 equal-sized cells called secondary spermatocytes (n = 23).
Step 3	Both secondary spermatocytes undergo meiosis –II (equational division) to produce 2 equal spermatids (n) each.
Step 4	Each spermatid is transformed into spermatozoa (sperms) by the process of spermiogenesis.
Step 5	After spermiogenesis, the head of sperms becomes embedded in the sertoli cells. Sperms are finally released from the seminiferous tubules by the process called spermiation.

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