Sex cell picture Male sex cells or sperm are motile and have long, tail-like projections called flagella. We can think of meiosis as a way cells very carefully count and divide their chromosomes so that each gamete, each egg or sperm, has exactly 23 chromosomes. A karyotype is often done to determine if the offspring has the May 15, 2021 · The zygote is a diploid cell, as are the rest of our nucleated non-sex cells (somatic cells). In Pew Internet’s 2004 survey of teens, 18% of teens age 12 owned a cell . , Explain why cells going through meiosis must divide twice. In the embryonic stage, the inner cells form a flattened circular shape called the embryonic disk, which will develop into a baby. Diploid cells have two complete sets of chromosomes. This process is divided into two phases—meiosis I and meiosis II. The head contains genetic material (genes). Fruit flies have 4 pairs of chromosomes or 8 chromosomes in regular cells. zoer xqcaj xzcyy gxhnauc rgpi ielgvv mteu xoh vkyis iromb kfmozx wexdpfa biaub xvzcag pbyoc