Adisease called phenylketonuria causes mental problems, reduces skin pigmentation, and also affects the coloration of urine. what kind of effect is exhibited by the gene responsible for this disease?

What did hunter gathers do to alter the environment?

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.