Atom,molecule,cell,tissue,organism,population,ecosystem,biosphere.
Well maybe that species evolved over time to get faster and be more durable because of the need to run away from lions and other prey.
The second one I think .............
Answer:
you would have 100% RY grasshoppers. All their offspring would have red and yellow stripes
Explanation:
Using a punnet square
Y Y
R RY RY
R RY RY
it would look like this
( sorry for the horrible punnet square)