Basic statistical algebra here.
The higher the amount of seeds in a given study, the higher probability of a stabilized 50/50 ratio.
but like phyzix said, if you have a pack of 5 seeds. there is a higher probability of male seeds or female seeds conversely.
but genetically speaking, the chromosomes that the male pollen carried to the female pistil was either an X or a Y chromosome. you have exactly 50% percent chance either way.
DUBS out.