Para un carácter existen tres alelos distintos: dos codominantes entre sí y otro recesivo. ¿Cuántos genotipos distintos existirán para ese carácter?¿Cuántos fenotipos?

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

What is the most common structure of volcanoes?