FILM 1: DIFFERENCE SPRINGS FROM THE EMBRYO (FULL-SCREEN VERSION)

This film presents the double genetic mixing that results from the formation of gametes and the fusion of the spermatozoon and the ovum. This aspect of sexuality results in an endless diversity of individuals within a same species.

FILM 2: THE FIRST CELLS

"Once fertilisation is complete, the first cell begins to divide, producing 2, then 4, then 8, then a small cluster of cells. This cluster attaches itself to the uterus, stretches and grows, then, a few months later, forms a baby with all that it needs to live in 95% of cases..." What role do genes play in the set of processes that lead from ova to human young?

FILM 3: ARCHITECT GENES

At the embryo stage, 19th-century naturalists were astonished to see how closely our human young resemble the young of rats, pigs, birds or tortoises... Comparative examples from the laboratory explain the shared genetic heritage that makes us so like them at the start of our development.

FILM 4 : A QUESTION OF SHAPE

How does shape come about?

How are our hands, feet, head and each of our members formed? Between 5 and 8 weeks, what happens to certain cells in our webbed hands when our fingers separate?

FILM 5: AN IMMATURE BRAIN

9 months. Full term. The child is born… just in time! If it were to grow more, its head would be too large to pass through a woman's birth canal.

One of our closest cousins is born at six months, also because of its mother's morphology. Before they are born, the two cousins - human young and ape young - are very similar. Naturally so: their genome is 98.4% identical…