Pain that occurs with a fever, nausea, and vomiting or loss of appetite may be a sign of inflammation or infection of the gallbladder (acute cholecystitis). Symptoms that may mean that a gallstone is blocking the common bile duct include: 1  Yellowing of the skin and the white part of the eyes (jaundice).  Dark urine.
Mendel concluded that biological inheritance is determined by factors that are passed from one generation to the next. Mendel also concluded that the principle of dominance states that some alleles are dominant and others are recessive.
Dihybrid Cross Problem Set A dihybrid cross involves a study of inheritance patterns for organisms differing in two traits. Mendel invented the dihybrid cross to determine if different traits of pea plants, such as flower color and seed shape, were inherited independently.ihybrid Cross Problem Set. 1  Predicting combinations of alleles in gametes of plants heterozygous for two traits. 2  When does a phenotype ratio of 9:3:3:1 occur? 3  A genetic cross yielding a 9:3:3:1 ratio of offspring. 4  Predicting gametes of an SsYy plant. 5  A SsYy x ssyy test cross. 6  Offspring of a SsYy x ssyy test cross. 7  Homozygous offspring of a 8  ... Hete