What do modifying species even mean

to genetically change the genetic structure of what makes up that species, i think..

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

coal is not sustainable because it will one day run out.