What two cells are needed to make a zygote?
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A zygote is a cell that is the result of fertilization. That is, two haploid cells—usually (but not always) an ovum from a female and a sperm cell from a male—merge into a single diploid cell called the zygote (or zygocyte). wikipedia.org Animal zygotes undergo mitotic cell divisions to become an embryo. Other organisms may undergo meiotic cell division at this time (for more information refer to biological life cycles). Twins and multiple births can be monozygotic (identical) or dizygotic (fraternal). A zygote is a diploid cell formed as a result of fusion of two haploid nuclei during sexual reproduction. The diploid cell resulting from the fusion of the male and female gametes that will grow into the embryo, fetus, and eventually the neonate (newborn). A zygote is a fertilized egg containing two sets of chromosomes, one from the egg (oocyte) and one form the sperm. The zygote is a single cell and the result of a fusion between two gametes, an egg (female) and one sperm cell (male).
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