Ba kiểu truyền tín hiệu của tế baò

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

Using meiosis, the sporophyte produces spores that are .

Which of the following statements is true of cells