Aman and a woman marry and have four children with the following blood types: Type A, Type B, Type AB, and Type O. What are the genotypes of the parents? Hint: work the problem backwards

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

What processes take place before the mature mrna exits the nucleus?

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer