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Fertilization is the complete process resulting in the fusion of haploid gametes, egg and sperm, to form the diploid zygote. The recent development of aided fertilization is described as in vitro fertilization (in vitro = "in glass", outside the body, IVF).
zygote (Carnegie stage 1) is the first diploid cell formed following fertilisation. male and female pronuclei, 2 nuclei approach each other and nuclear membranes break down. DNA replicates, first mitotic division
Following fertilization, the zygote and its associated membranes, together referred to as the conceptus, continue to be projected toward the uterus by peristalsis and beating cilia. During its journey to the uterus, the zygote undergoes five or six rapid mitotic cell divisions.
28 kwi 2017 · A zygote is the cell formed when two gametes fuse during fertilization. The DNA material from the two cells is combined in the resulting zygote. The cellular mechanisms present in the gametes also function in the zygote, but the newly fused DNA produces a different effect in the new cell.
Revision notes on Sexual Reproduction in Humans for the Cambridge (CIE) IGCSE Biology syllabus, written by the Biology experts at Save My Exams.
3 sie 2023 · A zygote is the starting point of a new sexually reproducing eukaryotic individual. Zygote ensures species continuation and species variation. The genetic trait of a developing individual will depend on the genes of male and female gametes fused to form the zygote. Zygote ensures diploid chromosomesin offspring.
5 dni temu · zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is brief and is followed by cleavage, when the single cell becomes subdivided into smaller cells.
