A numerous maternity happens whenever one egg (ovum) splits before implanting or whenever split eggs are each fertilized with a various semen.
Identical twins or triplets happen aided by the fertilization of a solitary egg that later divides into two or three identical embryos. Identical twins or triplets have a similar identity that is genetic are often the exact same intercourse, and appearance nearly the identical.
Fraternal multiples develop from split eggs which can be each fertilized by way of a sperm that is different. Fraternal twins might or may possibly not be of this exact same intercourse and may well not always resemble one another any longer than two siblings through the exact same parents might. 繼續閱讀