Can someone please tell me if I’m doing this right? If not, help me understand what I’m doing?

What feature of cell theory is best demonstrated in the image

Johannesburg kepler, an apprentice of brahe, believed in the heliocentric universe but rejected past astronomers belief in

Afamily has a y-linked disease that affects the father. what is the chance of a male offspring inheriting the same disease? oa. 100% ob. 50% oc. 25% d. 0%