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Red blood cell
Red blood cell
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Incomplete Dominance is easiest to see and
understand in terms of
. Dominant
alleles produce colorful pigments, and
organisms produce bright rich colors.
Recessive alleles often produce little to no pigment
at all, so
organism are very
light in color.
When an organism is a
, it produces
the pigment since it only has
making
pigment protein. This results in a color that is lighter
than a homozygous dominant organism but darker
than a homozygous recessive organism. It is an
.
Photo by David Blaikie
Dark
Brown
Palomino
Cream
D
d
D DD
Dd
d Dd
dd
Dark
Brown
Palomino
Cream
d
d
D Dd
Dd
d dd
dd
R
R
r
Rr
Rr
r
Rr
Rr
KEY:
R
r
R RR
Rr
r
rr
KEY:
Rr
Subject A
Subject B
Subject C
RR
Rr
rr
Red
Pink
White
Genotype for
Flower Color
Phenotype for
Flower Color
r
r
R
r
R
r
R
R
R
Rr Rr
R
RR Rr
r
Rr rr
R
RR RR
r
rr rr
r
Rr rr
r
Rr rr
r
Rr Rr
Chicken with Gray
Feathers
An intermediate trait
appears in the offspring.
Chicken with Black
& White Feathers
Both traits appear in the
offspring.