Jessica whines for extra when she is given dessert at the dinner table. in order to put an end to the whining, her mom decides to take away all of her dessert whenever she whines. her mom is attempting to use a(n) procedure. a. negative punishment b. negative reinforcement c. positive punishment d. extinction

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.