CLEP Natural Sciences - Biological Science - Question List

76. The amount of water a plant has in its tissues is determined primarily by the balance of which of the following processes?

77. Which type of cell must contain a mutation in order for the mutation to be passed from a woman to her offspring?

78. In tomato plants, the tall vine allele (T) is dominant to the short vine allele (t). Two tomato plants are crossed. Among the offspring plants grown from seed, 45% have tall vines and 55% haveshort vines. What are the most likely genotypes of the parent plants?

79. Degenerative nerve diseases destroy nerve cells. These diseases can lead to paralysis by interfering with which of the following?

80. In fish of the species Perissodus microlepis, some individuals have mouths that open to the right and some individuals have mouths that open to the left. The direction of the mouth opening is a genetic trait controlled by a single gene. The allele for a right-opening mouth (R) is dominant to the allele for a left-opening mouth (r). If two fish heterozygous for the mouth trait are crossed, what is the expectedratio of phenotypes in the offspring?