Imagine that a mouse’s DNA molecule results in the codon CCU…

Imagine that a mouse’s DNA molecule results in the codon CCU being to code for proline and a squirrel’s DNA molecule has the codon CCC being the code for proline. (Both of these codons code for proline.) What characteristic accounts for the fact that more than species can code for the same amino acid as another species?

Two carts collide on a horizontal, frictionless track. Cart…

Two carts collide on a horizontal, frictionless track. Cart A has mass mm and is moving at velocity vv. Cart B is initially at rest and has the same mass. (a) Explain why momentum is conserved during the collision.(b) Describe how you could experimentally determine whether the collision is elastic or inelastic.(c) If the carts stick together after the collision, explain how the total energy of the system changes.