Color Mutation in
Mandarins
Listed below are the possibilities for passing apricot,
black, white or blonde
in Mandarins as I understand the transfer of the genes. I have
researched this for a number of years with fellow
aviculturists, and numerous breeding procedures used here at
Squaw Creek Farm. From this information, with the help of
other aviculturists, I have come up with the following
illustrations of punit squares.
Premise: White, apricot, black, or blonde are sex-linked recessive traits.
White, apricot, black, or blonde apparently transfer the male,
which has two X
chromosomes with a color capability on each. The female has an
X and a Y chromosome, but only the X has a color capability.
Males can have two genes for normal, one gene for normal and
one for white, apricot, black, or blonde (split), or two genes for
white, apricot, black, or blonde. White, apricot, black, or blonde a
recessive, only shows when there is no gene for normal
present. Since the female has only one X chromosome she can
only be normal or white, apricot, black, or blonde. Thus a split white, apricot,
black, or blonde female is
impossible. The female duck believed to be a split is really a
normal duck like any other normal duck. Note also that the
cross between the split white, apricot, black, or blonde male and the normal female will
produce both normal and split white, apricot, black, or blonde males with no way to
distinguish between the two. The normal female in this cross
is the same as the one described above.
White,
Apricot, Black, or Blonde - A
sex-linked recessive gene determining the White,
Apricot, Black, or Blonde color in Mandarins. The charts
below can be used for White, Apricot, Black, or Blonde
the same as they can for the white.
|
Genetic
Possibilities:
White or Apricot
|
Normal Male
|
White Male
|
Split White Male
|
Normal Female
|
White Female
|
Split White Female
|
XCXC
|
XcXc
|
XCXc
|
XCY
|
XcY
|
|
|
White
Male and White Female |
Male
appears White,
Female appears White,
neither has genes for normal |
Male
|
Xc
White
Gene |
Xc
White
Gene |
Female |
Xc
White
Gene |
XcXc
White Male
Duckling |
XcXc
White Male
Duckling |
Y |
XcY
White Female
Duckling |
XcY
White Female
Duckling
|
|
White
Male and Normal Female |
Male
appears White
Female appears Normal,
no white gene |
Male
|
Xc
White
Gene |
Xc
White
Gene |
Female |
XC
Normal
Gene |
XcXC
Split White Male
Duckling |
XcXC
Split White Male
Duckling |
Y |
XcY
White Female
Duckling |
XcY
White Female
Duckling
|
|
Split
White Male and
Normal Female |
Male
appears Normal,
carries white gene,
Female appears Normal,
carries no white gene |
Male
|
XC
Normal
Gene |
Xc
White
Gene |
Female |
XC
Normal
Gene |
|
XcXC
Split White Male
Duckling |
Y |
|
XcY
White Female
Duckling
|
|
Split
White Male and
White Female |
Male
appears Normal,
carries white gene
Female appears White |
Male
|
XC
White
Gene |
Xc
White
Gene |
Female |
Xc
White
Gene |
XCXc
Split White Male
Duckling |
XcXc
White Male
Duckling |
Y |
|
XcY
White Female
Duckling
|
|
|
|
|