Review of Simple Mendelian
Genetics
ªDominant vs.
Recessive alleles for a gene
ªThe dominant
allele masks the recessive one, so you see the dominant
trait (for RR or Rr)
ªThe only way to
see a recessive trait is to have two recessive alleles
(rr)
ªDominant allele
is represented as a capital letter (R)
ªRecessive allele
is represented as a lowercase letter (r)