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.
Mendel was considered as the father of genetics because he showed that inheritance follows certain patterns. He was famous for working with pea plants. He bred different kinds â¦ of pea plants to get particular traits, such as tall or short.regor Johann Mendel is considered as the father of genetics because of his experiments with pea plants, whereby he discovered recessive and dominant characteristics.