That man is my father.

The ovum is the beginning of life.

A zygote is an early embryo formed by the union of a sperm and an egg from a male and a female.

Sperm is a part of the beginning of life.

That woman is my mother.

This type of plant attracts a rare interest among women.

There were many difficulties in the initial period of this project.

This project aims for the combination of science and art.

He combined two ideas to create a new project.

The development process of the embryo is very complex.