Dna has a structure similar to
a. ladder
wall
wheel
tree

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

Crossing over is a method of (blank)?

As an asteroid comes close to earth, it's name will change to? apex