Is bicolor a single gene trait?

TZ-OH6 · 1 Week Ago

I found some very old seed from an off-type plant that came out as a big red beefsteak back in Ohio, and for three years I have been trying to get a plant to grow and give me a fruit -- a problem for me here in Florida with heat, disease and hurricanes.

Anyway, with some frost protection for a month I just got two little fruits to ripen, and they ripened up as yellow shoulder, red bottom Bicolors. The original seed was probably a labeled bicolor heirloom but I didn't record what it was when I saved the seed.

So assuming the original off-type fruit was a heterozygous F1 red beefsteak, doing a Punnet square on a single trait dominant red gene tells me that what I have is a homozygous recessive F2 plant, and I'm not going to get a big red out of the seed I am fermenting now, correct?

1 Week Ago	#1
TZ-OH6 Tomatovillian™ Join Date: Feb 2008 Location: Mid-Ohio Posts: 851	Is bicolor a single gene trait? I found some very old seed from an off-type plant that came out as a big red beefsteak back in Ohio, and for three years I have been trying to get a plant to grow and give me a fruit -- a problem for me here in Florida with heat, disease and hurricanes. Anyway, with some frost protection for a month I just got two little fruits to ripen, and they ripened up as yellow shoulder, red bottom Bicolors. The original seed was probably a labeled bicolor heirloom but I didn't record what it was when I saved the seed. So assuming the original off-type fruit was a heterozygous F1 red beefsteak, doing a Punnet square on a single trait dominant red gene tells me that what I have is a homozygous recessive F2 plant, and I'm not going to get a big red out of the seed I am fermenting now, correct?