When you scratch a mosquito bite, you damage some cells. damaged cells release histamine, which causes localized swelling that can crush additional cells, causing the release of more histamine. this is an example of?

This is an example of positive feedback. Positive feedback is a cyclic process that can continue to amplify your body's response to a stimulus. The scratching worsens the histamine which makes you want to itch even more.

ANSWER: positive feedback

Hope this helps! :)

One of the parents' genotype must have been both Pp.