Are most phenotypic traits in nature quantitative (complex) or mendelian (simple - one gene to one phenotype)?.

Me with these questions image attached

If you want to double a batch of brownies you must have double the ingredients before you start cooking similarity a cell must double its contents including its dna prior to dividing

When is your breathing likely to speed up? a. when your white blood cells increase b. when your cells need more energy c. when your heart cells need more carbon dioxide d. when your blood cells have too much oxygen