How the seeds are produced
Eu-Sol Tomato Seeds are bred from naturally occurring mutants, supplied by the CM Rick Tomato Genomics Resource Centre in Davis, California.
The seeds are produced by crossing two naturally occurring mutants.
The first mutant has a recessive trait where its cotyledons are golden rather than green. This mutation is controlled by the recessive gene g. Its hypocotyl is pure breeding dominant (HH).
ggHH
The second mutant has a recessive trait where its hypocotyl has no purple in it whatsoever. This mutation is controlled by the recessive gene h. Its cotyledons are pure breeding dominant (GG)
GGhh
We then crossed these two mutants.
As you can see we end up with a population entirely made up of plants with green cotyledons and purple hypocotyl. However, all of the seeds carry the recessive genes for golden cotyledons and green hypocotyl. They have the genes GgHh. These seeds are then self-fertilized which means they are bred with each other.
This produces the 9:3:3:1 ratio in the seeds in a pack of Eu-Sol Tomato Seeds.
