What is the function of the stirrup or stapes

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.

What tool do geneticists use to predict the outcome of genetic crosses? a.karyotype b.punnett square c.centrifuge

Which of these definitions have been paired with the correct type of cell?