If a zygote attaches to the wall of the fallopian tube it is called an ectopic pregnancy. If it continues to grow, it will cause the tube to rupture and the mother to hemorrhage. If left untreated this can lead to death. Ectopic pregnancies have to be terminated because they are never viable and can be life threatening to the mother.
Implantation is the medical term meaning attachment of the zygote to the uterine wall. If the zygote does not attach, a period occurs.
Implantation.
A fertilized egg is a zygote for the first five days before becoming a blastocyst. It is during the first week after insemination that the zygote will attach to the uterine wall.
Implantation
Identical twins or triplets.
It thickens with tissue and nutrients to prepare to sustain a fertilized egg. This is what is shed during menses and what is seen, as the egg is virtually undetectable by itself.
Embryo get implanted on the uterine wall.
This process is called implantation. During implantation, the blastocyst embeds itself into the lining of the uterus, where it will continue to develop into an embryo.
Uterine fibroids refer to benign tumors that start in the uterus. They are the same smooth muscle fibers as the uterine wall but they are denser than normal uterine wall.
Twins can be identical or fraternal (monozygotic or dizygotic). For identical twins, one sperm fertilizes an egg. The zygote divides into two identical embryos. For fraternal twins, two separate eggs are fertilized. They both implant on the uterine wall, forming two zygotes.
Implantation typically occurs in the lining of the uterus about 6-10 days after fertilization. This process is essential for a fertilized egg to attach to the uterine wall and establish a pregnancy.
A diploid zygote with a thick protective wall suggests the zygote has undergone fertilization and is preparing for development. The thick protective wall, likely the zygote's outer layer, could provide physical protection and support as the embryo develops. This protective wall may function in maintaining internal conditions suitable for growth and development.