I have produced the Peanut Butter brooksi for the last three seasons and I have never produced a female Peanut Butter.

The Peanut Butter recessive trait starts out amelanistic but then gets more pigment and turns into a type of hypomelanism as it matures.

The pic on the bottom shows a PB male on the left. A female het PB in the middle and a male het PB on the far right. Note that the het female (middle) is lighter than the het male PB (right):





To date ('99 when the first male Peanut Butter was produced) there has never been a FEMALE PEANUT BUTTER PRODUCED. I have been the only person to produce the PB morph in the last three years and I have also never produced a female PB.



On a side note there is an unusual color difference in the het males and het females of this morph. Here is a pic which is shows a typical female het Peanut Butter and a typical het male Peanut Butter taken this year. They are both clutch mates from '03 and yet both are distinctively different in color.

MALE HET PB:



FEMALE HET PB:





1)So, whats going on with this reccesive gene? How does the Peanut Butter morph start out amelanistic lavender and then turn hypomelanistc?



2)Is it possible that recessive traits can be also sex linked?

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