What is the phenotype of an individual with one allele for dimples and one for no dimples?
This would depend on whether the allele for dimples is dominant
or recessive.
If the allele for dimples is dominant and the no dimples allele
is recessive then the phenotype of the individual would be dimpled.
If the allele for no dimples is dominant and the allele for no
dimples is recessive then the dimples will not be expressed. If
these alleles are codominant then the dimples will be expressed but
not as much as in an individual who has both alleles for
dimples.