Contrast the listed structures for Arteries: the vessel types.
Direction of blood flow -
Thickness of walls -
Size of lumen-
Presence of valves -
Pressure -
Veins:
Direction of blood flow -
Thickness of walls -
Size of lumen-
Presence of valves -
Pressure -
Describe the "tunics" of the

3. in the fruit fly, recessive mutation brown, b, causes brown color of the eye and absence of red pigment. recessive mutation p of another independent gene causes purple color of the eye and absence of brown pigment. the cross of a brown-eyed female and purple-eyed male produced wild type eyes. what will be the colors and their ratio in f2?