Describe how mendel showed that the green-seed trait did not disappear but was only masked. me : )

Mendel showed that the green-seed trait did not disappear but was only masked by breeding plants with only two alleles for the trait. After the cross of yellow seed, a small amount of offspring had green seeds. So, he concluded that the green-seed trait is masked by the dominant yellow-seed trait and that two alleles are necessary for green-seed trait to show up.

-3+7=4
-10-2=-12

4 > -12

-3+7 > -10-2