Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Dominant/recessive genes
Name: Kenneth Johnson
Status: N/A 
Age: N/A
Location: N/A
Country: N/A
Date: N/A 


Question:
What makes genes dominant or recessive?
Thanks



Replies:
We could address your question in two ways. First, we could define what dominant and recessive mean, in genetic terms - but I think maybe you already know that. Second, we can ask why a given allele (version of a gene) is dominant, whereas another allele is recessive. The answer has to do with the biochemical behavior of the proteins that are the products of those particular genes - that is, the "dominant gene" protein has a stronger effect than does the "recessive gene" protein.

Steve J Triezenberg



Click here to return to the Biology Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory