One copy of the chromosome comes from the egg and one copy of each chromosome comes from the sperm, so this you know about.

其中一条染色体来自卵子,另一条来自精子,这些你们都知道

耶鲁公开课 - 生物医学工程探索课程节选

It's still there to this day - a place to buy a coffee, a copy of The New York Times and an egg sandwich, before resting on the wooden bench outside to plot a new bestseller.

BBC: Escape from New York

Sir Ian and his team fused the genetic information from an adult sheep cell nucleus with an egg cell to form an embryo that developed into a genetically identical copy of the original adult.

BBC: Dolly the sheep pioneer knighted