en humanos, el gen que determina el color oscuro del pelo es dominante (P) frente al pelirrojo (p), el gen que determina el color pardo de los ojos (O) es dominante sobre el de los ojos azules (o). Un hombre de ojos pardos y pelo oscuro y una mujer tambien de pelo oscuro, pero de ojos azules, tuvieron dos hijos, uno de ellos pelirrojo y con ojos pardos, y el otro de pelo oscuro con ojos azules. representa este cruse , indicando los genotipo y los fenotipos . deduce los genotipos de su descendencia.​

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.