Where does the electron supply come from?

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

All ova contain sex chromosomes corresponding to: x y xx xy

Plz ! what does it mean for an allele to be dominant?