True bred organism will have a pure genotype (genetic expression of trait ) and will only produce a certain phenotype. True bred is sometimes also called pure bred . If you take two true breeding pea planfs - say one is yellow and one that id green - and cross them, you would end up with only yellow offspring.
Smiling .. just makes people happier because smiling is a happy thin so u can start thinking happy and then it makes you happier ?? Idk that’s a guess
