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Name: Maxim K.
Status: Other
Age: 20s
Location: N/A
Country: N/A
Date: N/A 


Question:
Dominant / recessive genes.

As the life forms are constantly changing, can recessive genes become dominant over the other with the time? Can dominant genes become recessive? Please, this is very important for me to know. Thank you.



Replies:
You are misinterpreting what recessive and dominant mean. A simple dominant gene is typically one that makes a protein that is fully functional in producing its product...say the gene for pigment; the dominant will produce a lot of the pigment giving a dark color. The recessive form of the gene produces less or none of the product so as in the case of the pigment there would be little pigment and a light color. In the presence of a recessive gene the dominant gene overpowers the recessive because the recessive gene either produces a protein that in turn gives little or none of the final product.

Peter Faletra Ph.D.
Office of Science
Department of Energy



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