When trying to distinguish between an infectious disease and noninfectious disease, what is the hallmark symptom for most infectious diseases?

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only

Agroup of organisms that changes over time is said to