Skip Navigation
The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
Donate Now Get Free Videos

Movie Theater

Right- and Left-Handedness


8 weeks

From The Biology of Prenatal Development.Buy Now

Script: 8 hetes korra az embriók 75%-a jobb oldali dominanciát mutat. A maradék egyenlően van megosztva a bal oldali dominancia és a nem dominált állapot között. Ez a legkorábbi bizonyítéka a jobb- és balkezes viselkedésnek.

All ages referenced to fertilization, not last menstrual period.
See Snapshots   |   Log in to create a playlist
Ovaries Identifiable
Ovaries Identifiable
The Highly Complex Brain
The Highly Complex Brain
Right- and Left-Handedness
Right- and Left-Handedness
Rolling Over
Rolling Over
Spontaneous Movement
Spontaneous Movement
Reflexive Movement
Reflexive Movement
When does health begin? Find out now.
Help give babies a healthy start and a healthy future. Donate now.