What do we mean when we use the term dihybrid cross?

A) A dihybrid cross involves two parents.
B) A dihybrid cross involves organisms that are heterozygous for two characters.
C) A dihybrid cross results in a 3:1 phenotype ratio in the F2 offspring.
D) A dihybrid cross is performed for two generations.
E) A dihybrid cross produces two offspring.

Patricia is told by her physician that her body and brain chemistry have physically adapted to the drug and that she has become dependent on the tranquilizers prescribed for her by another doctor.

What are two ways in which waves erode the land?

Which of the following statements about c4 carbon fixation is not true? a c4 carbon fixation is an adaptation for plants exposed to high light intensityb. c4 carbon fixation occurs in more plants than c3 carbon fixation. c c4 carbon fixation is more common in areas of high temperatures than c3 carbon fixation. d. c4 carbon fixation occurs in the inner cells of a leaf rather than the entire leaf.