Types of tropism are determined according to the affecting factor, as the following:
Phototropism ⇒ light
Geotropism ⇒ gravity
Hydrotropism ⇒ water
found this hope it helps because I didn't really understand the question
it was more of a statement Haha
Sensory nerves that are part of the peripheral nervous see your arm. Nerve impulses are brought to the brain by interneurons and the brain processes the information and you decide to lift your arm. Nerve impulses from the brain travel again through internuerons and into motor nerves that control the movement of your arm.
To sum it up it mixes all the genes up and creates a genetic diversity.. and in other words it produces a genetic variation
i hope i could help! good luck :)
