Who conducted the x-ray diffraction studies that were key to the discovery of the structure of dna?

If t=tall and t=short what will be the physical appearance of the offspring the cross below? a.some will be tall and some will be short b.they will all be tall c.they will all be short d.they will be medium height

What is the function of the nucleus in the euglena cells you observed?

What elements together make up seven percent of the earth crust