Which of the following is true about true breeding plants if they are allowed to self-pollinate?

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Compare the shapes of the bones of the human skull with the shapes of the bones of the human leg. how do the shapes differ? why are the shapes important?