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Name: Mike
Status: Student
Grade:  9-12
Location: NY
Country: United States
Date: November 2008


Question:
Why is yellow color dominant to green color in pea seeds?



Replies:
If the gene for yellow seeds codes for an enzyme that converts the green pigment to a yellow pigment and the allele for green pigment cannot produce this enzyme, then in any cell that contains both the yellow and green alleles, the yellow pigment will be synthesized, but if only green alleles are in a cell, no yellow pigment will be synthesized, so it appears that the green allele is recessive, i.e. the yellow allele is dominant.

Ron Baker, Ph.D.



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