Sperm cell is different from these cells because sperm cell contains 23chromosome while nerve , bone and skin cell contain 46 no. of chromosome.
Sperm is a male reproductive cell which is haploid and contain 23 no. of chromosome because it is produced by meiosis cell division.
Bone , nerve and skin cell are diploid in nature because they are produced by meiosis division thus contain 46 no. of chromosomes.
Hence, the correct answer is Sperm cell.
To know more about Chromosome here
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