A sperm and egg are each . They fuse during fertilization to produce a cell. A sperm and egg are each .1. diploid; diploid 2. diploid; haploid 3. haploid; diploid 4. haploid; haploid

3. haploid; diploid

Explanation:

Sperm is male gamete or often called male reproductive cell. During the process of spermatogenesis, reductional division (meiosis) occurs in the spermatocytes and spermatids are formed which further mature to sperms. Thus as a result of meiosis, their chromosome number is reduced to half and thus they become haploid cells. During oogensis, eggs are also formed as a result of meiosis which reduces the chromosome number and so eggs are also haploid.

When during fertilization, these two haploid nucleus of these cells fuse together, they form a diploid zygote.

a- all cells come from pre-existing cells