Please know what your talking about before you make such false statements e.g.( A seed's sex is already determined by how the seed was formed.) go study botany and horticulture PLEASE. Any marijuana seed created from a regular breeding program has the potential to be male or female the environment it is reared in determines the male female ratio unless the seeds have been altered in some fashion to show differentiated traits e.g.(feminized)
Sakamoto and various co-authors
[70][71] have used
RAPD to isolate several
genetic marker sequences that they name Male-Associated DNA in
Cannabis (MADC), and which they interpret as indirect evidence of a male chromosome. Several other research groups have reported identification of male-associated markers using RAPD and
AFLP.
[24][48][72] Ainsworth commented on these findings, stating,
"It is not surprising that male-associated markers are relatively abundant. In dioecious plants where sex chromosomes have not been identified, markers for maleness indicate either the presence of sex chromosomes which have not been distinguished by cytological methods or that the marker is tightly linked to a gene involved in sex determination.
[56]"
Environmental sex determination is known to occur in a variety of species.
[73] Many researchers have suggested that sex in
Cannabis is determined or strongly influenced by environmental factors.
[62] Ainsworth reviews that treatment with
auxin and
ethylene have feminizing effects, and that treatment with
cytokinins and
gibberellins have masculinizing effects.
[56] It has been reported that sex can be reversed in
Cannabis using chemical treatment.
[74] A
PCR-based method for the detection of female-associated
DNA polymorphisms by
genotyping has been developed.
[75]
Notice how they said OR strongly influenced? To think that certain seeds aren't male or female is fairly ridiculous to me if the only variable you have to determine sex is environment. If that were true, in theory, there would be no use for feminized seeds as you could easily create a microclimate suitable for all male or female production. Instead, you germinate 20 non feminized seeds & give or take 1 or 2 plants 10 will be male & 10 will be female. Please give me a better explanation if you have one, I'm willing to learn. I think maybe you were jumping the gun somewhat on my semantics.
To the poster, sorry to hijack your thread, just trying to help.