UCSB Science Line
Sponge Spicules Nerve Cells Galaxy Abalone Shell Nickel Succinate X-ray Lens Lupine
UCSB Science Line
How it Works
Ask a Question
Search Topics
Our Scientists
Science Links
Contact Information
When twins are identical, what factor causes one to become right-handed domiance and the other left-handed domiance?
Question Date: 1999-08-03
Answer 1:

As I understand it, the two identical twins also have hair and fingerprints that spiral in the opposite direction. Apparently, the entire "handedness" of the embryo alters.

Click Here to return to the search form.

University of California, Santa Barbara Materials Research Laboratory National Science Foundation
This program is co-sponsored by the National Science Foundation and UCSB School-University Partnerships
Copyright © 2020 The Regents of the University of California,
All Rights Reserved.
UCSB Terms of Use